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Finding the Fourth Proportional to 372,151.40, 521,711.80 and 372,151.40

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Solution

The fourth proportional to 372,151.40, 521,711.80 and 372,151.40 is: 521,711.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,151.40 : 521,711.80 = 372,151.40 : x
  2. Step 2: Convert to fraction form
    372,151.40/521,711.80 = 372,151.40/x
  3. Step 3: Cross multiply
    372,151.40x = 521,711.80 × 372,151.40
  4. Step 4: Simplify right side
    372,151.40x = 194,155,776,766.52
  5. Step 5: Solve for x
    x = 194,155,776,766.52/372,151.40
  6. Step 6: Final answer
    x = 521,711.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.