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Finding the Fourth Proportional to 262,149.20, 393,223.80 and 112,461.20

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Solution

The fourth proportional to 262,149.20, 393,223.80 and 112,461.20 is: 168,691.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,149.20 : 393,223.80 = 112,461.20 : x
  2. Step 2: Convert to fraction form
    262,149.20/393,223.80 = 112,461.20/x
  3. Step 3: Cross multiply
    262,149.20x = 393,223.80 × 112,461.20
  4. Step 4: Simplify right side
    262,149.20x = 44,222,420,416.56
  5. Step 5: Solve for x
    x = 44,222,420,416.56/262,149.20
  6. Step 6: Final answer
    x = 168,691.80

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1.5x scale

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.