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Finding the Fourth Proportional to 408,072.96, 612,156.03 and 108,565.74

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Solution

The fourth proportional to 408,072.96, 612,156.03 and 108,565.74 is: 162,861.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,072.96 : 612,156.03 = 108,565.74 : x
  2. Step 2: Convert to fraction form
    408,072.96/612,156.03 = 108,565.74/x
  3. Step 3: Cross multiply
    408,072.96x = 612,156.03 × 108,565.74
  4. Step 4: Simplify right side
    408,072.96x = 66,459,172,392.41
  5. Step 5: Solve for x
    x = 66,459,172,392.41/408,072.96
  6. Step 6: Final answer
    x = 162,861.01

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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.