Home / 287,114.10-430,761.66-135,305.04

Finding the Fourth Proportional to 287,114.10, 430,761.66 and 135,305.04

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Solution

The fourth proportional to 287,114.10, 430,761.66 and 135,305.04 is: 203,000.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,114.10 : 430,761.66 = 135,305.04 : x
  2. Step 2: Convert to fraction form
    287,114.10/430,761.66 = 135,305.04/x
  3. Step 3: Cross multiply
    287,114.10x = 430,761.66 × 135,305.04
  4. Step 4: Simplify right side
    287,114.10x = 58,284,224,744.73
  5. Step 5: Solve for x
    x = 58,284,224,744.73/287,114.10
  6. Step 6: Final answer
    x = 203,000.22

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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.