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Finding the Fourth Proportional to 359,390.40, 539,474.40 and 226,420.80

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Solution

The fourth proportional to 359,390.40, 539,474.40 and 226,420.80 is: 339,876.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,390.40 : 539,474.40 = 226,420.80 : x
  2. Step 2: Convert to fraction form
    359,390.40/539,474.40 = 226,420.80/x
  3. Step 3: Cross multiply
    359,390.40x = 539,474.40 × 226,420.80
  4. Step 4: Simplify right side
    359,390.40x = 122,148,225,227.52
  5. Step 5: Solve for x
    x = 122,148,225,227.52/359,390.40
  6. Step 6: Final answer
    x = 339,876.15

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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.