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Finding the Fourth Proportional to 359,281.92, 539,039.52 and 172,308

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Solution

The fourth proportional to 359,281.92, 539,039.52 and 172,308 is: 258,517.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,281.92 : 539,039.52 = 172,308 : x
  2. Step 2: Convert to fraction form
    359,281.92/539,039.52 = 172,308/x
  3. Step 3: Cross multiply
    359,281.92x = 539,039.52 × 172,308
  4. Step 4: Simplify right side
    359,281.92x = 92,880,821,612.16
  5. Step 5: Solve for x
    x = 92,880,821,612.16/359,281.92
  6. Step 6: Final answer
    x = 258,517.94

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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.