Home / 212,186.28-292,811.46-115,387.40

Finding the Fourth Proportional to 212,186.28, 292,811.46 and 115,387.40

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Solution

The fourth proportional to 212,186.28, 292,811.46 and 115,387.40 is: 159,231.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,186.28 : 292,811.46 = 115,387.40 : x
  2. Step 2: Convert to fraction form
    212,186.28/292,811.46 = 115,387.40/x
  3. Step 3: Cross multiply
    212,186.28x = 292,811.46 × 115,387.40
  4. Step 4: Simplify right side
    212,186.28x = 33,786,753,059.60
  5. Step 5: Solve for x
    x = 33,786,753,059.60/212,186.28
  6. Step 6: Final answer
    x = 159,231.56

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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.