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Finding the Fourth Proportional to 370,760.62, 511,645.05 and 217,812.75

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Solution

The fourth proportional to 370,760.62, 511,645.05 and 217,812.75 is: 300,578.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,760.62 : 511,645.05 = 217,812.75 : x
  2. Step 2: Convert to fraction form
    370,760.62/511,645.05 = 217,812.75/x
  3. Step 3: Cross multiply
    370,760.62x = 511,645.05 × 217,812.75
  4. Step 4: Simplify right side
    370,760.62x = 111,442,815,364.39
  5. Step 5: Solve for x
    x = 111,442,815,364.39/370,760.62
  6. Step 6: Final answer
    x = 300,578.89

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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.