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Finding the Fourth Proportional to 284,991.62, 427,290.59 and 124,990.70

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Solution

The fourth proportional to 284,991.62, 427,290.59 and 124,990.70 is: 187,399.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,991.62 : 427,290.59 = 124,990.70 : x
  2. Step 2: Convert to fraction form
    284,991.62/427,290.59 = 124,990.70/x
  3. Step 3: Cross multiply
    284,991.62x = 427,290.59 × 124,990.70
  4. Step 4: Simplify right side
    284,991.62x = 53,407,348,123.54
  5. Step 5: Solve for x
    x = 53,407,348,123.54/284,991.62
  6. Step 6: Final answer
    x = 187,399.72

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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.