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Finding the Fourth Proportional to 342,147.70, 472,144.71 and 189,177.04

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Solution

The fourth proportional to 342,147.70, 472,144.71 and 189,177.04 is: 261,053.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,147.70 : 472,144.71 = 189,177.04 : x
  2. Step 2: Convert to fraction form
    342,147.70/472,144.71 = 189,177.04/x
  3. Step 3: Cross multiply
    342,147.70x = 472,144.71 × 189,177.04
  4. Step 4: Simplify right side
    342,147.70x = 89,318,938,689.46
  5. Step 5: Solve for x
    x = 89,318,938,689.46/342,147.70
  6. Step 6: Final answer
    x = 261,053.75

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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.