Home / 381,690.20-572,535.30-312,570.20

Finding the Fourth Proportional to 381,690.20, 572,535.30 and 312,570.20

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Solution

The fourth proportional to 381,690.20, 572,535.30 and 312,570.20 is: 468,855.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,690.20 : 572,535.30 = 312,570.20 : x
  2. Step 2: Convert to fraction form
    381,690.20/572,535.30 = 312,570.20/x
  3. Step 3: Cross multiply
    381,690.20x = 572,535.30 × 312,570.20
  4. Step 4: Simplify right side
    381,690.20x = 178,957,473,228.06
  5. Step 5: Solve for x
    x = 178,957,473,228.06/381,690.20
  6. Step 6: Final answer
    x = 468,855.30

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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.