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Finding the Fourth Proportional to 238,491.20, 329,111.16 and 131,061.20

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Solution

The fourth proportional to 238,491.20, 329,111.16 and 131,061.20 is: 180,860.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,491.20 : 329,111.16 = 131,061.20 : x
  2. Step 2: Convert to fraction form
    238,491.20/329,111.16 = 131,061.20/x
  3. Step 3: Cross multiply
    238,491.20x = 329,111.16 × 131,061.20
  4. Step 4: Simplify right side
    238,491.20x = 43,133,703,562.99
  5. Step 5: Solve for x
    x = 43,133,703,562.99/238,491.20
  6. Step 6: Final answer
    x = 180,860.78

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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.