Home / 287,727.46-397,054.78-158,671.38

Finding the Fourth Proportional to 287,727.46, 397,054.78 and 158,671.38

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Solution

The fourth proportional to 287,727.46, 397,054.78 and 158,671.38 is: 218,961.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,727.46 : 397,054.78 = 158,671.38 : x
  2. Step 2: Convert to fraction form
    287,727.46/397,054.78 = 158,671.38/x
  3. Step 3: Cross multiply
    287,727.46x = 397,054.78 × 158,671.38
  4. Step 4: Simplify right side
    287,727.46x = 63,001,229,878.20
  5. Step 5: Solve for x
    x = 63,001,229,878.20/287,727.46
  6. Step 6: Final answer
    x = 218,961.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.