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Finding the Fourth Proportional to 408,145.17, 612,222.87 and 108,623.90

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Solution

The fourth proportional to 408,145.17, 612,222.87 and 108,623.90 is: 162,937.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,145.17 : 612,222.87 = 108,623.90 : x
  2. Step 2: Convert to fraction form
    408,145.17/612,222.87 = 108,623.90/x
  3. Step 3: Cross multiply
    408,145.17x = 612,222.87 × 108,623.90
  4. Step 4: Simplify right side
    408,145.17x = 66,502,035,808.59
  5. Step 5: Solve for x
    x = 66,502,035,808.59/408,145.17
  6. Step 6: Final answer
    x = 162,937.21

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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.