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Finding the Fourth Proportional to 440,715.28, 660,954.84 and 191,338

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Solution

The fourth proportional to 440,715.28, 660,954.84 and 191,338 is: 286,955.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,715.28 : 660,954.84 = 191,338 : x
  2. Step 2: Convert to fraction form
    440,715.28/660,954.84 = 191,338/x
  3. Step 3: Cross multiply
    440,715.28x = 660,954.84 × 191,338
  4. Step 4: Simplify right side
    440,715.28x = 126,465,777,175.92
  5. Step 5: Solve for x
    x = 126,465,777,175.92/440,715.28
  6. Step 6: Final answer
    x = 286,955.74

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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.