Home / 287,855.43-431,073.55-180,974.23

Finding the Fourth Proportional to 287,855.43, 431,073.55 and 180,974.23

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Solution

The fourth proportional to 287,855.43, 431,073.55 and 180,974.23 is: 271,015.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,855.43 : 431,073.55 = 180,974.23 : x
  2. Step 2: Convert to fraction form
    287,855.43/431,073.55 = 180,974.23/x
  3. Step 3: Cross multiply
    287,855.43x = 431,073.55 × 180,974.23
  4. Step 4: Simplify right side
    287,855.43x = 78,013,202,933.15
  5. Step 5: Solve for x
    x = 78,013,202,933.15/287,855.43
  6. Step 6: Final answer
    x = 271,015.22

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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.