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Finding the Fourth Proportional to 243,126.56, 364,818.33 and 172,505.61

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Solution

The fourth proportional to 243,126.56, 364,818.33 and 172,505.61 is: 258,849.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,126.56 : 364,818.33 = 172,505.61 : x
  2. Step 2: Convert to fraction form
    243,126.56/364,818.33 = 172,505.61/x
  3. Step 3: Cross multiply
    243,126.56x = 364,818.33 × 172,505.61
  4. Step 4: Simplify right side
    243,126.56x = 62,933,208,555.83
  5. Step 5: Solve for x
    x = 62,933,208,555.83/243,126.56
  6. Step 6: Final answer
    x = 258,849.58

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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.