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Finding the Fourth Proportional to 573,139.20, 859,708.80 and 307,418.70

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Solution

The fourth proportional to 573,139.20, 859,708.80 and 307,418.70 is: 461,128.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,139.20 : 859,708.80 = 307,418.70 : x
  2. Step 2: Convert to fraction form
    573,139.20/859,708.80 = 307,418.70/x
  3. Step 3: Cross multiply
    573,139.20x = 859,708.80 × 307,418.70
  4. Step 4: Simplify right side
    573,139.20x = 264,290,561,674.56
  5. Step 5: Solve for x
    x = 264,290,561,674.56/573,139.20
  6. Step 6: Final answer
    x = 461,128.05

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Similar ratio
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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.