Home / 287,511,240.13-431,094,240.27-131,870,082.76

Finding the Fourth Proportional to 287,511,240.13, 431,094,240.27 and 131,870,082.76

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Solution

The fourth proportional to 287,511,240.13, 431,094,240.27 and 131,870,082.76 is: 197,725,950.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,511,240.13 : 431,094,240.27 = 131,870,082.76 : x
  2. Step 2: Convert to fraction form
    287,511,240.13/431,094,240.27 = 131,870,082.76/x
  3. Step 3: Cross multiply
    287,511,240.13x = 431,094,240.27 × 131,870,082.76
  4. Step 4: Simplify right side
    287,511,240.13x = 56,848,433,139,608,752
  5. Step 5: Solve for x
    x = 56,848,433,139,608,752/287,511,240.13
  6. Step 6: Final answer
    x = 197,725,950.17

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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.