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Finding the Fourth Proportional to 359,902.40, 539,205.60 and 172,500.80

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Solution

The fourth proportional to 359,902.40, 539,205.60 and 172,500.80 is: 258,440.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,902.40 : 539,205.60 = 172,500.80 : x
  2. Step 2: Convert to fraction form
    359,902.40/539,205.60 = 172,500.80/x
  3. Step 3: Cross multiply
    359,902.40x = 539,205.60 × 172,500.80
  4. Step 4: Simplify right side
    359,902.40x = 93,013,397,364.48
  5. Step 5: Solve for x
    x = 93,013,397,364.48/359,902.40
  6. Step 6: Final answer
    x = 258,440.61

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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.