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Finding the Fourth Proportional to 359,309.80, 539,094.30 and 149,012.20

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Solution

The fourth proportional to 359,309.80, 539,094.30 and 149,012.20 is: 223,572.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,309.80 : 539,094.30 = 149,012.20 : x
  2. Step 2: Convert to fraction form
    359,309.80/539,094.30 = 149,012.20/x
  3. Step 3: Cross multiply
    359,309.80x = 539,094.30 × 149,012.20
  4. Step 4: Simplify right side
    359,309.80x = 80,331,627,650.46
  5. Step 5: Solve for x
    x = 80,331,627,650.46/359,309.80
  6. Step 6: Final answer
    x = 223,572.05

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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.