Home / 287,717.10-397,073.25-158,680.82

Finding the Fourth Proportional to 287,717.10, 397,073.25 and 158,680.82

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Solution

The fourth proportional to 287,717.10, 397,073.25 and 158,680.82 is: 218,992.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,717.10 : 397,073.25 = 158,680.82 : x
  2. Step 2: Convert to fraction form
    287,717.10/397,073.25 = 158,680.82/x
  3. Step 3: Cross multiply
    287,717.10x = 397,073.25 × 158,680.82
  4. Step 4: Simplify right side
    287,717.10x = 63,007,908,910.07
  5. Step 5: Solve for x
    x = 63,007,908,910.07/287,717.10
  6. Step 6: Final answer
    x = 218,992.58

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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.