Home / 287,511,231.38-431,094,227.15-131,870,074.01

Finding the Fourth Proportional to 287,511,231.38, 431,094,227.15 and 131,870,074.01

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Solution

The fourth proportional to 287,511,231.38, 431,094,227.15 and 131,870,074.01 is: 197,725,937.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,511,231.38 : 431,094,227.15 = 131,870,074.01 : x
  2. Step 2: Convert to fraction form
    287,511,231.38/431,094,227.15 = 131,870,074.01/x
  3. Step 3: Cross multiply
    287,511,231.38x = 431,094,227.15 × 131,870,074.01
  4. Step 4: Simplify right side
    287,511,231.38x = 56,848,427,637,728,448
  5. Step 5: Solve for x
    x = 56,848,427,637,728,448/287,511,231.38
  6. Step 6: Final answer
    x = 197,725,937.06

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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.