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Finding the Fourth Proportional to 479,074, 718,402.36 and 137,442.04

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Solution

The fourth proportional to 479,074, 718,402.36 and 137,442.04 is: 206,103.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,074 : 718,402.36 = 137,442.04 : x
  2. Step 2: Convert to fraction form
    479,074/718,402.36 = 137,442.04/x
  3. Step 3: Cross multiply
    479,074x = 718,402.36 × 137,442.04
  4. Step 4: Simplify right side
    479,074x = 98,738,685,899.21
  5. Step 5: Solve for x
    x = 98,738,685,899.21/479,074
  6. Step 6: Final answer
    x = 206,103.20

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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.