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Finding the Fourth Proportional to 281,553.32, 421,348.21 and 230,360.71

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Solution

The fourth proportional to 281,553.32, 421,348.21 and 230,360.71 is: 344,737.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,553.32 : 421,348.21 = 230,360.71 : x
  2. Step 2: Convert to fraction form
    281,553.32/421,348.21 = 230,360.71/x
  3. Step 3: Cross multiply
    281,553.32x = 421,348.21 × 230,360.71
  4. Step 4: Simplify right side
    281,553.32x = 97,062,072,812.83
  5. Step 5: Solve for x
    x = 97,062,072,812.83/281,553.32
  6. Step 6: Final answer
    x = 344,737.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.