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Finding the Fourth Proportional to 408,822.40, 613,598.10 and 240,131.80

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Solution

The fourth proportional to 408,822.40, 613,598.10 and 240,131.80 is: 360,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,822.40 : 613,598.10 = 240,131.80 : x
  2. Step 2: Convert to fraction form
    408,822.40/613,598.10 = 240,131.80/x
  3. Step 3: Cross multiply
    408,822.40x = 613,598.10 × 240,131.80
  4. Step 4: Simplify right side
    408,822.40x = 147,344,416,229.58
  5. Step 5: Solve for x
    x = 147,344,416,229.58/408,822.40
  6. Step 6: Final answer
    x = 360,411.80

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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.