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Finding the Fourth Proportional to 359,818.07, 539,728.88 and 149,456.21

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Solution

The fourth proportional to 359,818.07, 539,728.88 and 149,456.21 is: 224,185.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,818.07 : 539,728.88 = 149,456.21 : x
  2. Step 2: Convert to fraction form
    359,818.07/539,728.88 = 149,456.21/x
  3. Step 3: Cross multiply
    359,818.07x = 539,728.88 × 149,456.21
  4. Step 4: Simplify right side
    359,818.07x = 80,665,829,386.42
  5. Step 5: Solve for x
    x = 80,665,829,386.42/359,818.07
  6. Step 6: Final answer
    x = 224,185.05

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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.