Home / 280,377.19-420,524.27-90,854.11

Finding the Fourth Proportional to 280,377.19, 420,524.27 and 90,854.11

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Solution

The fourth proportional to 280,377.19, 420,524.27 and 90,854.11 is: 136,267.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,377.19 : 420,524.27 = 90,854.11 : x
  2. Step 2: Convert to fraction form
    280,377.19/420,524.27 = 90,854.11/x
  3. Step 3: Cross multiply
    280,377.19x = 420,524.27 × 90,854.11
  4. Step 4: Simplify right side
    280,377.19x = 38,206,357,829.98
  5. Step 5: Solve for x
    x = 38,206,357,829.98/280,377.19
  6. Step 6: Final answer
    x = 136,267.71

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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.