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Finding the Fourth Proportional to 284,812.10, 426,872.55 and 126,872.90

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Solution

The fourth proportional to 284,812.10, 426,872.55 and 126,872.90 is: 190,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,812.10 : 426,872.55 = 126,872.90 : x
  2. Step 2: Convert to fraction form
    284,812.10/426,872.55 = 126,872.90/x
  3. Step 3: Cross multiply
    284,812.10x = 426,872.55 × 126,872.90
  4. Step 4: Simplify right side
    284,812.10x = 54,158,558,348.90
  5. Step 5: Solve for x
    x = 54,158,558,348.90/284,812.10
  6. Step 6: Final answer
    x = 190,155.40

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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.