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Finding the Fourth Proportional to 372,139.20, 558,208.80 and 352,893.60

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Solution

The fourth proportional to 372,139.20, 558,208.80 and 352,893.60 is: 529,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,139.20 : 558,208.80 = 352,893.60 : x
  2. Step 2: Convert to fraction form
    372,139.20/558,208.80 = 352,893.60/x
  3. Step 3: Cross multiply
    372,139.20x = 558,208.80 × 352,893.60
  4. Step 4: Simplify right side
    372,139.20x = 196,988,312,983.68
  5. Step 5: Solve for x
    x = 196,988,312,983.68/372,139.20
  6. Step 6: Final answer
    x = 529,340.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.