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Finding the Fourth Proportional to 359,270.20, 538,905.30 and 217,552.60

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Solution

The fourth proportional to 359,270.20, 538,905.30 and 217,552.60 is: 326,328.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,270.20 : 538,905.30 = 217,552.60 : x
  2. Step 2: Convert to fraction form
    359,270.20/538,905.30 = 217,552.60/x
  3. Step 3: Cross multiply
    359,270.20x = 538,905.30 × 217,552.60
  4. Step 4: Simplify right side
    359,270.20x = 117,240,249,168.78
  5. Step 5: Solve for x
    x = 117,240,249,168.78/359,270.20
  6. Step 6: Final answer
    x = 326,328.90

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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.