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Finding the Fourth Proportional to 399,857.20, 600,046.87 and 147,140.23

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Solution

The fourth proportional to 399,857.20, 600,046.87 and 147,140.23 is: 220,806.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,857.20 : 600,046.87 = 147,140.23 : x
  2. Step 2: Convert to fraction form
    399,857.20/600,046.87 = 147,140.23/x
  3. Step 3: Cross multiply
    399,857.20x = 600,046.87 × 147,140.23
  4. Step 4: Simplify right side
    399,857.20x = 88,291,034,462.58
  5. Step 5: Solve for x
    x = 88,291,034,462.58/399,857.20
  6. Step 6: Final answer
    x = 220,806.41

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1.5x scale

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.