Home / 287,511,384-431,094,456.05-131,870,226.63

Finding the Fourth Proportional to 287,511,384, 431,094,456.05 and 131,870,226.63

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Solution

The fourth proportional to 287,511,384, 431,094,456.05 and 131,870,226.63 is: 197,726,165.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,511,384 : 431,094,456.05 = 131,870,226.63 : x
  2. Step 2: Convert to fraction form
    287,511,384/431,094,456.05 = 131,870,226.63/x
  3. Step 3: Cross multiply
    287,511,384x = 431,094,456.05 × 131,870,226.63
  4. Step 4: Simplify right side
    287,511,384x = 56,848,523,617,590,720
  5. Step 5: Solve for x
    x = 56,848,523,617,590,720/287,511,384
  6. Step 6: Final answer
    x = 197,726,165.92

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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.