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Finding the Fourth Proportional to 451,038.42, 676,505.79 and 118,640.34

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Solution

The fourth proportional to 451,038.42, 676,505.79 and 118,640.34 is: 177,946.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,038.42 : 676,505.79 = 118,640.34 : x
  2. Step 2: Convert to fraction form
    451,038.42/676,505.79 = 118,640.34/x
  3. Step 3: Cross multiply
    451,038.42x = 676,505.79 × 118,640.34
  4. Step 4: Simplify right side
    451,038.42x = 80,260,876,937.57
  5. Step 5: Solve for x
    x = 80,260,876,937.57/451,038.42
  6. Step 6: Final answer
    x = 177,946.87

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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.