Home / 221,253.17-305,242.74-136,222.61

Finding the Fourth Proportional to 221,253.17, 305,242.74 and 136,222.61

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Solution

The fourth proportional to 221,253.17, 305,242.74 and 136,222.61 is: 187,933.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,253.17 : 305,242.74 = 136,222.61 : x
  2. Step 2: Convert to fraction form
    221,253.17/305,242.74 = 136,222.61/x
  3. Step 3: Cross multiply
    221,253.17x = 305,242.74 × 136,222.61
  4. Step 4: Simplify right side
    221,253.17x = 41,580,961,200.14
  5. Step 5: Solve for x
    x = 41,580,961,200.14/221,253.17
  6. Step 6: Final answer
    x = 187,933.86

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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.