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Finding the Fourth Proportional to 342,134.82, 472,134.09 and 187,089.70

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Solution

The fourth proportional to 342,134.82, 472,134.09 and 187,089.70 is: 258,177.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,134.82 : 472,134.09 = 187,089.70 : x
  2. Step 2: Convert to fraction form
    342,134.82/472,134.09 = 187,089.70/x
  3. Step 3: Cross multiply
    342,134.82x = 472,134.09 × 187,089.70
  4. Step 4: Simplify right side
    342,134.82x = 88,331,425,257.87
  5. Step 5: Solve for x
    x = 88,331,425,257.87/342,134.82
  6. Step 6: Final answer
    x = 258,177.25

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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.