Home / 287,118.10-430,767.66-135,309.04

Finding the Fourth Proportional to 287,118.10, 430,767.66 and 135,309.04

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Solution

The fourth proportional to 287,118.10, 430,767.66 and 135,309.04 is: 203,006.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,118.10 : 430,767.66 = 135,309.04 : x
  2. Step 2: Convert to fraction form
    287,118.10/430,767.66 = 135,309.04/x
  3. Step 3: Cross multiply
    287,118.10x = 430,767.66 × 135,309.04
  4. Step 4: Simplify right side
    287,118.10x = 58,286,758,537.65
  5. Step 5: Solve for x
    x = 58,286,758,537.65/287,118.10
  6. Step 6: Final answer
    x = 203,006.21

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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.