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Finding the Fourth Proportional to 399,233.34, 598,944.40 and 129,361.04

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Solution

The fourth proportional to 399,233.34, 598,944.40 and 129,361.04 is: 194,072.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,233.34 : 598,944.40 = 129,361.04 : x
  2. Step 2: Convert to fraction form
    399,233.34/598,944.40 = 129,361.04/x
  3. Step 3: Cross multiply
    399,233.34x = 598,944.40 × 129,361.04
  4. Step 4: Simplify right side
    399,233.34x = 77,480,070,486.18
  5. Step 5: Solve for x
    x = 77,480,070,486.18/399,233.34
  6. Step 6: Final answer
    x = 194,072.14

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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.