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Finding the Fourth Proportional to 454,432.80, 681,642.80 and 205,114.40

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Solution

The fourth proportional to 454,432.80, 681,642.80 and 205,114.40 is: 307,668.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,432.80 : 681,642.80 = 205,114.40 : x
  2. Step 2: Convert to fraction form
    454,432.80/681,642.80 = 205,114.40/x
  3. Step 3: Cross multiply
    454,432.80x = 681,642.80 × 205,114.40
  4. Step 4: Simplify right side
    454,432.80x = 139,814,753,936.32
  5. Step 5: Solve for x
    x = 139,814,753,936.32/454,432.80
  6. Step 6: Final answer
    x = 307,668.71

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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.