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Finding the Fourth Proportional to 395,694.40, 593,541.60 and 115,220.80

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Solution

The fourth proportional to 395,694.40, 593,541.60 and 115,220.80 is: 172,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,694.40 : 593,541.60 = 115,220.80 : x
  2. Step 2: Convert to fraction form
    395,694.40/593,541.60 = 115,220.80/x
  3. Step 3: Cross multiply
    395,694.40x = 593,541.60 × 115,220.80
  4. Step 4: Simplify right side
    395,694.40x = 68,388,337,985.28
  5. Step 5: Solve for x
    x = 68,388,337,985.28/395,694.40
  6. Step 6: Final answer
    x = 172,831.20

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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.