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Finding the Fourth Proportional to 359,439.60, 539,159.40 and 172,354.80

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Solution

The fourth proportional to 359,439.60, 539,159.40 and 172,354.80 is: 258,532.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,439.60 : 539,159.40 = 172,354.80 : x
  2. Step 2: Convert to fraction form
    359,439.60/539,159.40 = 172,354.80/x
  3. Step 3: Cross multiply
    359,439.60x = 539,159.40 × 172,354.80
  4. Step 4: Simplify right side
    359,439.60x = 92,926,710,555.12
  5. Step 5: Solve for x
    x = 92,926,710,555.12/359,439.60
  6. Step 6: Final answer
    x = 258,532.20

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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.