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Finding the Fourth Proportional to 306,956.92, 423,776.13 and 203,731.11

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Solution

The fourth proportional to 306,956.92, 423,776.13 and 203,731.11 is: 281,265.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,956.92 : 423,776.13 = 203,731.11 : x
  2. Step 2: Convert to fraction form
    306,956.92/423,776.13 = 203,731.11/x
  3. Step 3: Cross multiply
    306,956.92x = 423,776.13 × 203,731.11
  4. Step 4: Simplify right side
    306,956.92x = 86,336,381,356.40
  5. Step 5: Solve for x
    x = 86,336,381,356.40/306,956.92
  6. Step 6: Final answer
    x = 281,265.47

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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.