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Finding the Fourth Proportional to 527,353.88, 791,079.42 and 172,369.76

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Solution

The fourth proportional to 527,353.88, 791,079.42 and 172,369.76 is: 258,570.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,353.88 : 791,079.42 = 172,369.76 : x
  2. Step 2: Convert to fraction form
    527,353.88/791,079.42 = 172,369.76/x
  3. Step 3: Cross multiply
    527,353.88x = 791,079.42 × 172,369.76
  4. Step 4: Simplify right side
    527,353.88x = 136,358,169,766.34
  5. Step 5: Solve for x
    x = 136,358,169,766.34/527,353.88
  6. Step 6: Final answer
    x = 258,570.53

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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.