Home / 287,787.83-431,435.57-110,422.13

Finding the Fourth Proportional to 287,787.83, 431,435.57 and 110,422.13

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Solution

The fourth proportional to 287,787.83, 431,435.57 and 110,422.13 is: 165,538.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,787.83 : 431,435.57 = 110,422.13 : x
  2. Step 2: Convert to fraction form
    287,787.83/431,435.57 = 110,422.13/x
  3. Step 3: Cross multiply
    287,787.83x = 431,435.57 × 110,422.13
  4. Step 4: Simplify right side
    287,787.83x = 47,640,031,887.88
  5. Step 5: Solve for x
    x = 47,640,031,887.88/287,787.83
  6. Step 6: Final answer
    x = 165,538.73

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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.