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Finding the Fourth Proportional to 318,981.68, 440,146.68 and 181,139.12

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Solution

The fourth proportional to 318,981.68, 440,146.68 and 181,139.12 is: 249,944.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,981.68 : 440,146.68 = 181,139.12 : x
  2. Step 2: Convert to fraction form
    318,981.68/440,146.68 = 181,139.12/x
  3. Step 3: Cross multiply
    318,981.68x = 440,146.68 × 181,139.12
  4. Step 4: Simplify right side
    318,981.68x = 79,727,782,286.12
  5. Step 5: Solve for x
    x = 79,727,782,286.12/318,981.68
  6. Step 6: Final answer
    x = 249,944.71

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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.