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Finding the Fourth Proportional to 238,593.80, 329,246.78 and 131,143.15

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Solution

The fourth proportional to 238,593.80, 329,246.78 and 131,143.15 is: 180,970.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,593.80 : 329,246.78 = 131,143.15 : x
  2. Step 2: Convert to fraction form
    238,593.80/329,246.78 = 131,143.15/x
  3. Step 3: Cross multiply
    238,593.80x = 329,246.78 × 131,143.15
  4. Step 4: Simplify right side
    238,593.80x = 43,178,459,612.40
  5. Step 5: Solve for x
    x = 43,178,459,612.40/238,593.80
  6. Step 6: Final answer
    x = 180,970.58

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1.5x scale

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.