Home / 287,885.32-431,889.94-88,219.50

Finding the Fourth Proportional to 287,885.32, 431,889.94 and 88,219.50

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Solution

The fourth proportional to 287,885.32, 431,889.94 and 88,219.50 is: 132,348.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,885.32 : 431,889.94 = 88,219.50 : x
  2. Step 2: Convert to fraction form
    287,885.32/431,889.94 = 88,219.50/x
  3. Step 3: Cross multiply
    287,885.32x = 431,889.94 × 88,219.50
  4. Step 4: Simplify right side
    287,885.32x = 38,101,114,561.83
  5. Step 5: Solve for x
    x = 38,101,114,561.83/287,885.32
  6. Step 6: Final answer
    x = 132,348.24

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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.