Home / 287,811,197.92-431,716,870.38-80,580,138.76

Finding the Fourth Proportional to 287,811,197.92, 431,716,870.38 and 80,580,138.76

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Solution

The fourth proportional to 287,811,197.92, 431,716,870.38 and 80,580,138.76 is: 120,870,228.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,811,197.92 : 431,716,870.38 = 80,580,138.76 : x
  2. Step 2: Convert to fraction form
    287,811,197.92/431,716,870.38 = 80,580,138.76/x
  3. Step 3: Cross multiply
    287,811,197.92x = 431,716,870.38 × 80,580,138.76
  4. Step 4: Simplify right side
    287,811,197.92x = 34,787,805,320,253,336
  5. Step 5: Solve for x
    x = 34,787,805,320,253,336/287,811,197.92
  6. Step 6: Final answer
    x = 120,870,228.72

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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.