Home / 287,995.34-431,999.22-88,311.30

Finding the Fourth Proportional to 287,995.34, 431,999.22 and 88,311.30

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Solution

The fourth proportional to 287,995.34, 431,999.22 and 88,311.30 is: 132,468.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,995.34 : 431,999.22 = 88,311.30 : x
  2. Step 2: Convert to fraction form
    287,995.34/431,999.22 = 88,311.30/x
  3. Step 3: Cross multiply
    287,995.34x = 431,999.22 × 88,311.30
  4. Step 4: Simplify right side
    287,995.34x = 38,150,412,717.19
  5. Step 5: Solve for x
    x = 38,150,412,717.19/287,995.34
  6. Step 6: Final answer
    x = 132,468.85

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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.