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Finding the Fourth Proportional to 331,479.76, 497,219.36 and 82,161.76

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Solution

The fourth proportional to 331,479.76, 497,219.36 and 82,161.76 is: 123,242.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,479.76 : 497,219.36 = 82,161.76 : x
  2. Step 2: Convert to fraction form
    331,479.76/497,219.36 = 82,161.76/x
  3. Step 3: Cross multiply
    331,479.76x = 497,219.36 × 82,161.76
  4. Step 4: Simplify right side
    331,479.76x = 40,852,417,723.67
  5. Step 5: Solve for x
    x = 40,852,417,723.67/331,479.76
  6. Step 6: Final answer
    x = 123,242.57

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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.