Home / 221,470.61-305,629.45-120,868.61

Finding the Fourth Proportional to 221,470.61, 305,629.45 and 120,868.61

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Solution

The fourth proportional to 221,470.61, 305,629.45 and 120,868.61 is: 166,798.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,470.61 : 305,629.45 = 120,868.61 : x
  2. Step 2: Convert to fraction form
    221,470.61/305,629.45 = 120,868.61/x
  3. Step 3: Cross multiply
    221,470.61x = 305,629.45 × 120,868.61
  4. Step 4: Simplify right side
    221,470.61x = 36,941,006,796.56
  5. Step 5: Solve for x
    x = 36,941,006,796.56/221,470.61
  6. Step 6: Final answer
    x = 166,798.69

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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.