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Finding the Fourth Proportional to 386,350.65, 579,380.18 and 161,726.72

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Solution

The fourth proportional to 386,350.65, 579,380.18 and 161,726.72 is: 242,529.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,350.65 : 579,380.18 = 161,726.72 : x
  2. Step 2: Convert to fraction form
    386,350.65/579,380.18 = 161,726.72/x
  3. Step 3: Cross multiply
    386,350.65x = 579,380.18 × 161,726.72
  4. Step 4: Simplify right side
    386,350.65x = 93,701,252,438.88
  5. Step 5: Solve for x
    x = 93,701,252,438.88/386,350.65
  6. Step 6: Final answer
    x = 242,529.04

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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.