Home / 287,811,196.92-431,716,868.88-80,580,137.76

Finding the Fourth Proportional to 287,811,196.92, 431,716,868.88 and 80,580,137.76

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Solution

The fourth proportional to 287,811,196.92, 431,716,868.88 and 80,580,137.76 is: 120,870,227.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,811,196.92 : 431,716,868.88 = 80,580,137.76 : x
  2. Step 2: Convert to fraction form
    287,811,196.92/431,716,868.88 = 80,580,137.76/x
  3. Step 3: Cross multiply
    287,811,196.92x = 431,716,868.88 × 80,580,137.76
  4. Step 4: Simplify right side
    287,811,196.92x = 34,787,804,767,666,260
  5. Step 5: Solve for x
    x = 34,787,804,767,666,260/287,811,196.92
  6. Step 6: Final answer
    x = 120,870,227.22

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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.