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Finding the Fourth Proportional to 266,935,801.60, 400,403,702.40 and 85,201,350.40

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Solution

The fourth proportional to 266,935,801.60, 400,403,702.40 and 85,201,350.40 is: 127,802,025.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,935,801.60 : 400,403,702.40 = 85,201,350.40 : x
  2. Step 2: Convert to fraction form
    266,935,801.60/400,403,702.40 = 85,201,350.40/x
  3. Step 3: Cross multiply
    266,935,801.60x = 400,403,702.40 × 85,201,350.40
  4. Step 4: Simplify right side
    266,935,801.60x = 34,114,936,149,639,720
  5. Step 5: Solve for x
    x = 34,114,936,149,639,720/266,935,801.60
  6. Step 6: Final answer
    x = 127,802,025.60

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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.