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Finding the Fourth Proportional to 296,761.69, 445,141.35 and 72,122.78

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Solution

The fourth proportional to 296,761.69, 445,141.35 and 72,122.78 is: 108,183.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,761.69 : 445,141.35 = 72,122.78 : x
  2. Step 2: Convert to fraction form
    296,761.69/445,141.35 = 72,122.78/x
  3. Step 3: Cross multiply
    296,761.69x = 445,141.35 × 72,122.78
  4. Step 4: Simplify right side
    296,761.69x = 32,104,832,767.81
  5. Step 5: Solve for x
    x = 32,104,832,767.81/296,761.69
  6. Step 6: Final answer
    x = 108,183.89

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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.