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Finding the Fourth Proportional to 359,388.80, 539,083.20 and 247,414.40

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Solution

The fourth proportional to 359,388.80, 539,083.20 and 247,414.40 is: 371,121.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,388.80 : 539,083.20 = 247,414.40 : x
  2. Step 2: Convert to fraction form
    359,388.80/539,083.20 = 247,414.40/x
  3. Step 3: Cross multiply
    359,388.80x = 539,083.20 × 247,414.40
  4. Step 4: Simplify right side
    359,388.80x = 133,376,946,478.08
  5. Step 5: Solve for x
    x = 133,376,946,478.08/359,388.80
  6. Step 6: Final answer
    x = 371,121.60

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1.5x scale

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.