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Finding the Fourth Proportional to 574,430.20, 861,645.30 and 147,965.20

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Solution

The fourth proportional to 574,430.20, 861,645.30 and 147,965.20 is: 221,947.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,430.20 : 861,645.30 = 147,965.20 : x
  2. Step 2: Convert to fraction form
    574,430.20/861,645.30 = 147,965.20/x
  3. Step 3: Cross multiply
    574,430.20x = 861,645.30 × 147,965.20
  4. Step 4: Simplify right side
    574,430.20x = 127,493,519,143.56
  5. Step 5: Solve for x
    x = 127,493,519,143.56/574,430.20
  6. Step 6: Final answer
    x = 221,947.80

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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.