Home / 385,947.20-578,834.40-253,755.20

Finding the Fourth Proportional to 385,947.20, 578,834.40 and 253,755.20

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Solution

The fourth proportional to 385,947.20, 578,834.40 and 253,755.20 is: 380,575.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,947.20 : 578,834.40 = 253,755.20 : x
  2. Step 2: Convert to fraction form
    385,947.20/578,834.40 = 253,755.20/x
  3. Step 3: Cross multiply
    385,947.20x = 578,834.40 × 253,755.20
  4. Step 4: Simplify right side
    385,947.20x = 146,882,238,938.88
  5. Step 5: Solve for x
    x = 146,882,238,938.88/385,947.20
  6. Step 6: Final answer
    x = 380,575.99

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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.