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Finding the Fourth Proportional to 521,370.32, 782,180.32 and 217,595.57

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Solution

The fourth proportional to 521,370.32, 782,180.32 and 217,595.57 is: 326,445.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,370.32 : 782,180.32 = 217,595.57 : x
  2. Step 2: Convert to fraction form
    521,370.32/782,180.32 = 217,595.57/x
  3. Step 3: Cross multiply
    521,370.32x = 782,180.32 × 217,595.57
  4. Step 4: Simplify right side
    521,370.32x = 170,198,969,138.27
  5. Step 5: Solve for x
    x = 170,198,969,138.27/521,370.32
  6. Step 6: Final answer
    x = 326,445.45

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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.