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Finding the Fourth Proportional to 329,331, 454,477.20 and 178,428

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Solution

The fourth proportional to 329,331, 454,477.20 and 178,428 is: 246,230.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,331 : 454,477.20 = 178,428 : x
  2. Step 2: Convert to fraction form
    329,331/454,477.20 = 178,428/x
  3. Step 3: Cross multiply
    329,331x = 454,477.20 × 178,428
  4. Step 4: Simplify right side
    329,331x = 81,091,457,841.60
  5. Step 5: Solve for x
    x = 81,091,457,841.60/329,331
  6. Step 6: Final answer
    x = 246,230.87

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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.