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Finding the Fourth Proportional to 345,168.72, 517,512.36 and 152,938.60

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Solution

The fourth proportional to 345,168.72, 517,512.36 and 152,938.60 is: 229,301.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,168.72 : 517,512.36 = 152,938.60 : x
  2. Step 2: Convert to fraction form
    345,168.72/517,512.36 = 152,938.60/x
  3. Step 3: Cross multiply
    345,168.72x = 517,512.36 × 152,938.60
  4. Step 4: Simplify right side
    345,168.72x = 79,147,613,233.53
  5. Step 5: Solve for x
    x = 79,147,613,233.53/345,168.72
  6. Step 6: Final answer
    x = 229,301.23

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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.