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Finding the Fourth Proportional to 329,809.12, 454,924.56 and 220,919.20

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Solution

The fourth proportional to 329,809.12, 454,924.56 and 220,919.20 is: 304,726.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,809.12 : 454,924.56 = 220,919.20 : x
  2. Step 2: Convert to fraction form
    329,809.12/454,924.56 = 220,919.20/x
  3. Step 3: Cross multiply
    329,809.12x = 454,924.56 × 220,919.20
  4. Step 4: Simplify right side
    329,809.12x = 100,501,569,855.55
  5. Step 5: Solve for x
    x = 100,501,569,855.55/329,809.12
  6. Step 6: Final answer
    x = 304,726.47

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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.