Home / 287,964.18-397,387.89-158,903.91

Finding the Fourth Proportional to 287,964.18, 397,387.89 and 158,903.91

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Solution

The fourth proportional to 287,964.18, 397,387.89 and 158,903.91 is: 219,285.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,964.18 : 397,387.89 = 158,903.91 : x
  2. Step 2: Convert to fraction form
    287,964.18/397,387.89 = 158,903.91/x
  3. Step 3: Cross multiply
    287,964.18x = 397,387.89 × 158,903.91
  4. Step 4: Simplify right side
    287,964.18x = 63,146,489,507.65
  5. Step 5: Solve for x
    x = 63,146,489,507.65/287,964.18
  6. Step 6: Final answer
    x = 219,285.92

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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.