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Finding the Fourth Proportional to 287,983.65, 431,959.33 and 88,303.49

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Solution

The fourth proportional to 287,983.65, 431,959.33 and 88,303.49 is: 132,450.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,983.65 : 431,959.33 = 88,303.49 : x
  2. Step 2: Convert to fraction form
    287,983.65/431,959.33 = 88,303.49/x
  3. Step 3: Cross multiply
    287,983.65x = 431,959.33 × 88,303.49
  4. Step 4: Simplify right side
    287,983.65x = 38,143,517,162.38
  5. Step 5: Solve for x
    x = 38,143,517,162.38/287,983.65
  6. Step 6: Final answer
    x = 132,450.29

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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.