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Finding the Fourth Proportional to 527,442.88, 791,212.96 and 172,458.72

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Solution

The fourth proportional to 527,442.88, 791,212.96 and 172,458.72 is: 258,703.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,442.88 : 791,212.96 = 172,458.72 : x
  2. Step 2: Convert to fraction form
    527,442.88/791,212.96 = 172,458.72/x
  3. Step 3: Cross multiply
    527,442.88x = 791,212.96 × 172,458.72
  4. Step 4: Simplify right side
    527,442.88x = 136,451,574,329.01
  5. Step 5: Solve for x
    x = 136,451,574,329.01/527,442.88
  6. Step 6: Final answer
    x = 258,703.98

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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.