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Finding the Fourth Proportional to 343,472.40, 515,257.20 and 106,790.40

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Solution

The fourth proportional to 343,472.40, 515,257.20 and 106,790.40 is: 160,200.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,472.40 : 515,257.20 = 106,790.40 : x
  2. Step 2: Convert to fraction form
    343,472.40/515,257.20 = 106,790.40/x
  3. Step 3: Cross multiply
    343,472.40x = 515,257.20 × 106,790.40
  4. Step 4: Simplify right side
    343,472.40x = 55,024,522,490.88
  5. Step 5: Solve for x
    x = 55,024,522,490.88/343,472.40
  6. Step 6: Final answer
    x = 160,200.71

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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.