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Finding the Fourth Proportional to 331,011.52, 456,794.64 and 187,799.20

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Solution

The fourth proportional to 331,011.52, 456,794.64 and 187,799.20 is: 259,162.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,011.52 : 456,794.64 = 187,799.20 : x
  2. Step 2: Convert to fraction form
    331,011.52/456,794.64 = 187,799.20/x
  3. Step 3: Cross multiply
    331,011.52x = 456,794.64 × 187,799.20
  4. Step 4: Simplify right side
    331,011.52x = 85,785,667,956.29
  5. Step 5: Solve for x
    x = 85,785,667,956.29/331,011.52
  6. Step 6: Final answer
    x = 259,162.18

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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.