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Finding the Fourth Proportional to 454,940.04, 682,385.44 and 139,397.86

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Solution

The fourth proportional to 454,940.04, 682,385.44 and 139,397.86 is: 209,089.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,940.04 : 682,385.44 = 139,397.86 : x
  2. Step 2: Convert to fraction form
    454,940.04/682,385.44 = 139,397.86/x
  3. Step 3: Cross multiply
    454,940.04x = 682,385.44 × 139,397.86
  4. Step 4: Simplify right side
    454,940.04x = 95,123,070,031.16
  5. Step 5: Solve for x
    x = 95,123,070,031.16/454,940.04
  6. Step 6: Final answer
    x = 209,089.25

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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.