Home / 287,343.24-431,082.26-87,663.56

Finding the Fourth Proportional to 287,343.24, 431,082.26 and 87,663.56

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Solution

The fourth proportional to 287,343.24, 431,082.26 and 87,663.56 is: 131,515.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,343.24 : 431,082.26 = 87,663.56 : x
  2. Step 2: Convert to fraction form
    287,343.24/431,082.26 = 87,663.56/x
  3. Step 3: Cross multiply
    287,343.24x = 431,082.26 × 87,663.56
  4. Step 4: Simplify right side
    287,343.24x = 37,790,205,564.45
  5. Step 5: Solve for x
    x = 37,790,205,564.45/287,343.24
  6. Step 6: Final answer
    x = 131,515.90

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1.5x scale

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.