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Finding the Fourth Proportional to 215,321.76, 322,944.24 and 65,525.76

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Solution

The fourth proportional to 215,321.76, 322,944.24 and 65,525.76 is: 98,276.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,321.76 : 322,944.24 = 65,525.76 : x
  2. Step 2: Convert to fraction form
    215,321.76/322,944.24 = 65,525.76/x
  3. Step 3: Cross multiply
    215,321.76x = 322,944.24 × 65,525.76
  4. Step 4: Simplify right side
    215,321.76x = 21,161,166,763.62
  5. Step 5: Solve for x
    x = 21,161,166,763.62/215,321.76
  6. Step 6: Final answer
    x = 98,276.95

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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.