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Finding the Fourth Proportional to 172,041.40, 257,543.70 and 151,305.40

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Solution

The fourth proportional to 172,041.40, 257,543.70 and 151,305.40 is: 226,502.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,041.40 : 257,543.70 = 151,305.40 : x
  2. Step 2: Convert to fraction form
    172,041.40/257,543.70 = 151,305.40/x
  3. Step 3: Cross multiply
    172,041.40x = 257,543.70 × 151,305.40
  4. Step 4: Simplify right side
    172,041.40x = 38,967,752,545.98
  5. Step 5: Solve for x
    x = 38,967,752,545.98/172,041.40
  6. Step 6: Final answer
    x = 226,502.18

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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.