Home / 287,979.65-431,619.21-203,764.13

Finding the Fourth Proportional to 287,979.65, 431,619.21 and 203,764.13

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Solution

The fourth proportional to 287,979.65, 431,619.21 and 203,764.13 is: 305,398.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,979.65 : 431,619.21 = 203,764.13 : x
  2. Step 2: Convert to fraction form
    287,979.65/431,619.21 = 203,764.13/x
  3. Step 3: Cross multiply
    287,979.65x = 431,619.21 × 203,764.13
  4. Step 4: Simplify right side
    287,979.65x = 87,948,510,658.84
  5. Step 5: Solve for x
    x = 87,948,510,658.84/287,979.65
  6. Step 6: Final answer
    x = 305,398.36

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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.