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Finding the Fourth Proportional to 318,440.73, 439,449 and 175,209.69

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Solution

The fourth proportional to 318,440.73, 439,449 and 175,209.69 is: 241,789.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,440.73 : 439,449 = 175,209.69 : x
  2. Step 2: Convert to fraction form
    318,440.73/439,449 = 175,209.69/x
  3. Step 3: Cross multiply
    318,440.73x = 439,449 × 175,209.69
  4. Step 4: Simplify right side
    318,440.73x = 76,995,723,060.81
  5. Step 5: Solve for x
    x = 76,995,723,060.81/318,440.73
  6. Step 6: Final answer
    x = 241,789.81

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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.