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Finding the Fourth Proportional to 403,451.20, 605,176.80 and 262,446.40

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Solution

The fourth proportional to 403,451.20, 605,176.80 and 262,446.40 is: 393,669.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,451.20 : 605,176.80 = 262,446.40 : x
  2. Step 2: Convert to fraction form
    403,451.20/605,176.80 = 262,446.40/x
  3. Step 3: Cross multiply
    403,451.20x = 605,176.80 × 262,446.40
  4. Step 4: Simplify right side
    403,451.20x = 158,826,472,523.52
  5. Step 5: Solve for x
    x = 158,826,472,523.52/403,451.20
  6. Step 6: Final answer
    x = 393,669.60

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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.