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Finding the Fourth Proportional to 342,722.57, 472,962.99 and 187,687.49

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Solution

The fourth proportional to 342,722.57, 472,962.99 and 187,687.49 is: 259,011.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,722.57 : 472,962.99 = 187,687.49 : x
  2. Step 2: Convert to fraction form
    342,722.57/472,962.99 = 187,687.49/x
  3. Step 3: Cross multiply
    342,722.57x = 472,962.99 × 187,687.49
  4. Step 4: Simplify right side
    342,722.57x = 88,769,234,091.18
  5. Step 5: Solve for x
    x = 88,769,234,091.18/342,722.57
  6. Step 6: Final answer
    x = 259,011.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.