Home / 280,188,638,542.78-386,660,694,066.04-151,730,308,699.20

Finding the Fourth Proportional to 280,188,638,542.78, 386,660,694,066.04 and 151,730,308,699.20

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Solution

The fourth proportional to 280,188,638,542.78, 386,660,694,066.04 and 151,730,308,699.20 is: 209,388,027,928.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,188,638,542.78 : 386,660,694,066.04 = 151,730,308,699.20 : x
  2. Step 2: Convert to fraction form
    280,188,638,542.78/386,660,694,066.04 = 151,730,308,699.20/x
  3. Step 3: Cross multiply
    280,188,638,542.78x = 386,660,694,066.04 × 151,730,308,699.20
  4. Step 4: Simplify right side
    280,188,638,542.78x = 58,668,146,472,487,181,352,960
  5. Step 5: Solve for x
    x = 58,668,146,472,487,181,352,960/280,188,638,542.78
  6. Step 6: Final answer
    x = 209,388,027,928.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.