Home / 290,121,518.60-400,363,940.12-157,960,999.26

Finding the Fourth Proportional to 290,121,518.60, 400,363,940.12 and 157,960,999.26

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Solution

The fourth proportional to 290,121,518.60, 400,363,940.12 and 157,960,999.26 is: 217,984,134.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,121,518.60 : 400,363,940.12 = 157,960,999.26 : x
  2. Step 2: Convert to fraction form
    290,121,518.60/400,363,940.12 = 157,960,999.26/x
  3. Step 3: Cross multiply
    290,121,518.60x = 400,363,940.12 × 157,960,999.26
  4. Step 4: Simplify right side
    290,121,518.60x = 63,241,888,049,026,000
  5. Step 5: Solve for x
    x = 63,241,888,049,026,000/290,121,518.60
  6. Step 6: Final answer
    x = 217,984,134.21

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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.