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Finding the Fourth Proportional to 408,047.90, 612,070.92 and 108,528.56

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Solution

The fourth proportional to 408,047.90, 612,070.92 and 108,528.56 is: 162,792.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,047.90 : 612,070.92 = 108,528.56 : x
  2. Step 2: Convert to fraction form
    408,047.90/612,070.92 = 108,528.56/x
  3. Step 3: Cross multiply
    408,047.90x = 612,070.92 × 108,528.56
  4. Step 4: Simplify right side
    408,047.90x = 66,427,175,565.48
  5. Step 5: Solve for x
    x = 66,427,175,565.48/408,047.90
  6. Step 6: Final answer
    x = 162,792.59

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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.