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Finding the Fourth Proportional to 256,722.56, 354,384.96 and 156,155.52

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Solution

The fourth proportional to 256,722.56, 354,384.96 and 156,155.52 is: 215,560.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,722.56 : 354,384.96 = 156,155.52 : x
  2. Step 2: Convert to fraction form
    256,722.56/354,384.96 = 156,155.52/x
  3. Step 3: Cross multiply
    256,722.56x = 354,384.96 × 156,155.52
  4. Step 4: Simplify right side
    256,722.56x = 55,339,167,708.98
  5. Step 5: Solve for x
    x = 55,339,167,708.98/256,722.56
  6. Step 6: Final answer
    x = 215,560.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.