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Finding the Fourth Proportional to 408,143.29, 612,220.06 and 108,622.02

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Solution

The fourth proportional to 408,143.29, 612,220.06 and 108,622.02 is: 162,934.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,143.29 : 612,220.06 = 108,622.02 : x
  2. Step 2: Convert to fraction form
    408,143.29/612,220.06 = 108,622.02/x
  3. Step 3: Cross multiply
    408,143.29x = 612,220.06 × 108,622.02
  4. Step 4: Simplify right side
    408,143.29x = 66,500,579,330.17
  5. Step 5: Solve for x
    x = 66,500,579,330.17/408,143.29
  6. Step 6: Final answer
    x = 162,934.39

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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.