Home / 287,714.10-431,206.65-109,983.90

Finding the Fourth Proportional to 287,714.10, 431,206.65 and 109,983.90

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Solution

The fourth proportional to 287,714.10, 431,206.65 and 109,983.90 is: 164,836.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,714.10 : 431,206.65 = 109,983.90 : x
  2. Step 2: Convert to fraction form
    287,714.10/431,206.65 = 109,983.90/x
  3. Step 3: Cross multiply
    287,714.10x = 431,206.65 × 109,983.90
  4. Step 4: Simplify right side
    287,714.10x = 47,425,789,072.94
  5. Step 5: Solve for x
    x = 47,425,789,072.94/287,714.10
  6. Step 6: Final answer
    x = 164,836.51

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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.