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Finding the Fourth Proportional to 343,867.80, 515,801.70 and 107,208.60

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Solution

The fourth proportional to 343,867.80, 515,801.70 and 107,208.60 is: 160,812.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,867.80 : 515,801.70 = 107,208.60 : x
  2. Step 2: Convert to fraction form
    343,867.80/515,801.70 = 107,208.60/x
  3. Step 3: Cross multiply
    343,867.80x = 515,801.70 × 107,208.60
  4. Step 4: Simplify right side
    343,867.80x = 55,298,378,134.62
  5. Step 5: Solve for x
    x = 55,298,378,134.62/343,867.80
  6. Step 6: Final answer
    x = 160,812.90

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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.