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Finding the Fourth Proportional to 268,656,591.80, 402,984,887.70 and 98,433,385.40

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Solution

The fourth proportional to 268,656,591.80, 402,984,887.70 and 98,433,385.40 is: 147,650,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,656,591.80 : 402,984,887.70 = 98,433,385.40 : x
  2. Step 2: Convert to fraction form
    268,656,591.80/402,984,887.70 = 98,433,385.40/x
  3. Step 3: Cross multiply
    268,656,591.80x = 402,984,887.70 × 98,433,385.40
  4. Step 4: Simplify right side
    268,656,591.80x = 39,667,166,761,349,824
  5. Step 5: Solve for x
    x = 39,667,166,761,349,824/268,656,591.80
  6. Step 6: Final answer
    x = 147,650,078.10

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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.