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Finding the Fourth Proportional to 172,331.52, 258,543.36 and 155,880.96

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Solution

The fourth proportional to 172,331.52, 258,543.36 and 155,880.96 is: 233,863.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,331.52 : 258,543.36 = 155,880.96 : x
  2. Step 2: Convert to fraction form
    172,331.52/258,543.36 = 155,880.96/x
  3. Step 3: Cross multiply
    172,331.52x = 258,543.36 × 155,880.96
  4. Step 4: Simplify right side
    172,331.52x = 40,301,987,158.43
  5. Step 5: Solve for x
    x = 40,301,987,158.43/172,331.52
  6. Step 6: Final answer
    x = 233,863.12

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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.