Home / 347,719.60-521,644.20-111,129.40

Finding the Fourth Proportional to 347,719.60, 521,644.20 and 111,129.40

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Solution

The fourth proportional to 347,719.60, 521,644.20 and 111,129.40 is: 166,714.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,719.60 : 521,644.20 = 111,129.40 : x
  2. Step 2: Convert to fraction form
    347,719.60/521,644.20 = 111,129.40/x
  3. Step 3: Cross multiply
    347,719.60x = 521,644.20 × 111,129.40
  4. Step 4: Simplify right side
    347,719.60x = 57,970,006,959.48
  5. Step 5: Solve for x
    x = 57,970,006,959.48/347,719.60
  6. Step 6: Final answer
    x = 166,714.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.