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Finding the Fourth Proportional to 408,092.40, 611,701.20 and 155,275.20

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Solution

The fourth proportional to 408,092.40, 611,701.20 and 155,275.20 is: 232,746.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,092.40 : 611,701.20 = 155,275.20 : x
  2. Step 2: Convert to fraction form
    408,092.40/611,701.20 = 155,275.20/x
  3. Step 3: Cross multiply
    408,092.40x = 611,701.20 × 155,275.20
  4. Step 4: Simplify right side
    408,092.40x = 94,982,026,170.24
  5. Step 5: Solve for x
    x = 94,982,026,170.24/408,092.40
  6. Step 6: Final answer
    x = 232,746.37

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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.