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Finding the Fourth Proportional to 238,477.79, 329,101.16 and 129,583.17

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Solution

The fourth proportional to 238,477.79, 329,101.16 and 129,583.17 is: 178,825.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,477.79 : 329,101.16 = 129,583.17 : x
  2. Step 2: Convert to fraction form
    238,477.79/329,101.16 = 129,583.17/x
  3. Step 3: Cross multiply
    238,477.79x = 329,101.16 × 129,583.17
  4. Step 4: Simplify right side
    238,477.79x = 42,645,970,915.56
  5. Step 5: Solve for x
    x = 42,645,970,915.56/238,477.79
  6. Step 6: Final answer
    x = 178,825.75

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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.