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Finding the Fourth Proportional to 261,660,337.60, 391,640,200.80 and 261,660,337.60

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Solution

The fourth proportional to 261,660,337.60, 391,640,200.80 and 261,660,337.60 is: 391,640,200.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,660,337.60 : 391,640,200.80 = 261,660,337.60 : x
  2. Step 2: Convert to fraction form
    261,660,337.60/391,640,200.80 = 261,660,337.60/x
  3. Step 3: Cross multiply
    261,660,337.60x = 391,640,200.80 × 261,660,337.60
  4. Step 4: Simplify right side
    261,660,337.60x = 102,476,707,159,059,792
  5. Step 5: Solve for x
    x = 102,476,707,159,059,792/261,660,337.60
  6. Step 6: Final answer
    x = 391,640,200.80

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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.