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Finding the Fourth Proportional to 370,882.45, 511,883.31 and 217,920.61

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Solution

The fourth proportional to 370,882.45, 511,883.31 and 217,920.61 is: 300,768.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,882.45 : 511,883.31 = 217,920.61 : x
  2. Step 2: Convert to fraction form
    370,882.45/511,883.31 = 217,920.61/x
  3. Step 3: Cross multiply
    370,882.45x = 511,883.31 × 217,920.61
  4. Step 4: Simplify right side
    370,882.45x = 111,549,923,164.02
  5. Step 5: Solve for x
    x = 111,549,923,164.02/370,882.45
  6. Step 6: Final answer
    x = 300,768.94

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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.