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Finding the Fourth Proportional to 356,711.80, 534,614.10 and 146,111.80

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Solution

The fourth proportional to 356,711.80, 534,614.10 and 146,111.80 is: 218,981.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,711.80 : 534,614.10 = 146,111.80 : x
  2. Step 2: Convert to fraction form
    356,711.80/534,614.10 = 146,111.80/x
  3. Step 3: Cross multiply
    356,711.80x = 534,614.10 × 146,111.80
  4. Step 4: Simplify right side
    356,711.80x = 78,113,428,456.38
  5. Step 5: Solve for x
    x = 78,113,428,456.38/356,711.80
  6. Step 6: Final answer
    x = 218,981.90

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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.