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Finding the Fourth Proportional to 238,253.92, 356,613 and 131,470

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Solution

The fourth proportional to 238,253.92, 356,613 and 131,470 is: 196,781.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,253.92 : 356,613 = 131,470 : x
  2. Step 2: Convert to fraction form
    238,253.92/356,613 = 131,470/x
  3. Step 3: Cross multiply
    238,253.92x = 356,613 × 131,470
  4. Step 4: Simplify right side
    238,253.92x = 46,883,911,110
  5. Step 5: Solve for x
    x = 46,883,911,110/238,253.92
  6. Step 6: Final answer
    x = 196,781.28

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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.