Home / 257,436.10-385,279.35-225,943.30

Finding the Fourth Proportional to 257,436.10, 385,279.35 and 225,943.30

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Solution

The fourth proportional to 257,436.10, 385,279.35 and 225,943.30 is: 338,147.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,436.10 : 385,279.35 = 225,943.30 : x
  2. Step 2: Convert to fraction form
    257,436.10/385,279.35 = 225,943.30/x
  3. Step 3: Cross multiply
    257,436.10x = 385,279.35 × 225,943.30
  4. Step 4: Simplify right side
    257,436.10x = 87,051,287,760.86
  5. Step 5: Solve for x
    x = 87,051,287,760.86/257,436.10
  6. Step 6: Final answer
    x = 338,147.17

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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.