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Finding the Fourth Proportional to 435,839.70, 653,759.55 and 155,255.70

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Solution

The fourth proportional to 435,839.70, 653,759.55 and 155,255.70 is: 232,883.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,839.70 : 653,759.55 = 155,255.70 : x
  2. Step 2: Convert to fraction form
    435,839.70/653,759.55 = 155,255.70/x
  3. Step 3: Cross multiply
    435,839.70x = 653,759.55 × 155,255.70
  4. Step 4: Simplify right side
    435,839.70x = 101,499,896,566.94
  5. Step 5: Solve for x
    x = 101,499,896,566.94/435,839.70
  6. Step 6: Final answer
    x = 232,883.55

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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.