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Finding the Fourth Proportional to 667,192.65, 920,726.22 and 361,269.18

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Solution

The fourth proportional to 667,192.65, 920,726.22 and 361,269.18 is: 498,551.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,192.65 : 920,726.22 = 361,269.18 : x
  2. Step 2: Convert to fraction form
    667,192.65/920,726.22 = 361,269.18/x
  3. Step 3: Cross multiply
    667,192.65x = 920,726.22 × 361,269.18
  4. Step 4: Simplify right side
    667,192.65x = 332,630,006,503.90
  5. Step 5: Solve for x
    x = 332,630,006,503.90/667,192.65
  6. Step 6: Final answer
    x = 498,551.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.