Home / 287,511,238.13-431,094,237.28-131,870,080.76

Finding the Fourth Proportional to 287,511,238.13, 431,094,237.28 and 131,870,080.76

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Solution

The fourth proportional to 287,511,238.13, 431,094,237.28 and 131,870,080.76 is: 197,725,947.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,511,238.13 : 431,094,237.28 = 131,870,080.76 : x
  2. Step 2: Convert to fraction form
    287,511,238.13/431,094,237.28 = 131,870,080.76/x
  3. Step 3: Cross multiply
    287,511,238.13x = 431,094,237.28 × 131,870,080.76
  4. Step 4: Simplify right side
    287,511,238.13x = 56,848,431,882,799,048
  5. Step 5: Solve for x
    x = 56,848,431,882,799,048/287,511,238.13
  6. Step 6: Final answer
    x = 197,725,947.18

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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.