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Finding the Fourth Proportional to 392,047.38, 588,000.78 and 103,860.93

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Solution

The fourth proportional to 392,047.38, 588,000.78 and 103,860.93 is: 155,772.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,047.38 : 588,000.78 = 103,860.93 : x
  2. Step 2: Convert to fraction form
    392,047.38/588,000.78 = 103,860.93/x
  3. Step 3: Cross multiply
    392,047.38x = 588,000.78 × 103,860.93
  4. Step 4: Simplify right side
    392,047.38x = 61,070,307,851.53
  5. Step 5: Solve for x
    x = 61,070,307,851.53/392,047.38
  6. Step 6: Final answer
    x = 155,772.77

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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.