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Finding the Fourth Proportional to 312,983.46, 431,850.69 and 185,700.42

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Solution

The fourth proportional to 312,983.46, 431,850.69 and 185,700.42 is: 256,227.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,983.46 : 431,850.69 = 185,700.42 : x
  2. Step 2: Convert to fraction form
    312,983.46/431,850.69 = 185,700.42/x
  3. Step 3: Cross multiply
    312,983.46x = 431,850.69 × 185,700.42
  4. Step 4: Simplify right side
    312,983.46x = 80,194,854,510.29
  5. Step 5: Solve for x
    x = 80,194,854,510.29/312,983.46
  6. Step 6: Final answer
    x = 256,227.13

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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.