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Finding the Fourth Proportional to 329,841.88, 454,979.28 and 291,478.30

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Solution

The fourth proportional to 329,841.88, 454,979.28 and 291,478.30 is: 402,061.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,841.88 : 454,979.28 = 291,478.30 : x
  2. Step 2: Convert to fraction form
    329,841.88/454,979.28 = 291,478.30/x
  3. Step 3: Cross multiply
    329,841.88x = 454,979.28 × 291,478.30
  4. Step 4: Simplify right side
    329,841.88x = 132,616,587,069.62
  5. Step 5: Solve for x
    x = 132,616,587,069.62/329,841.88
  6. Step 6: Final answer
    x = 402,061.09

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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.