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Finding the Fourth Proportional to 311,995.40, 467,956.95 and 87,373.79

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Solution

The fourth proportional to 311,995.40, 467,956.95 and 87,373.79 is: 131,050.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,995.40 : 467,956.95 = 87,373.79 : x
  2. Step 2: Convert to fraction form
    311,995.40/467,956.95 = 87,373.79/x
  3. Step 3: Cross multiply
    311,995.40x = 467,956.95 × 87,373.79
  4. Step 4: Simplify right side
    311,995.40x = 40,887,171,365.74
  5. Step 5: Solve for x
    x = 40,887,171,365.74/311,995.40
  6. Step 6: Final answer
    x = 131,050.56

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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.