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Finding the Fourth Proportional to 887,257.10, 1,330,885.65 and 256,234.70

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Solution

The fourth proportional to 887,257.10, 1,330,885.65 and 256,234.70 is: 384,352.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,257.10 : 1,330,885.65 = 256,234.70 : x
  2. Step 2: Convert to fraction form
    887,257.10/1,330,885.65 = 256,234.70/x
  3. Step 3: Cross multiply
    887,257.10x = 1,330,885.65 × 256,234.70
  4. Step 4: Simplify right side
    887,257.10x = 341,019,085,262.06
  5. Step 5: Solve for x
    x = 341,019,085,262.06/887,257.10
  6. Step 6: Final answer
    x = 384,352.05

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Similar ratio
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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.