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Finding the Fourth Proportional to 229,145.76, 343,722.49 and 79,390.46

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Solution

The fourth proportional to 229,145.76, 343,722.49 and 79,390.46 is: 119,087.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,145.76 : 343,722.49 = 79,390.46 : x
  2. Step 2: Convert to fraction form
    229,145.76/343,722.49 = 79,390.46/x
  3. Step 3: Cross multiply
    229,145.76x = 343,722.49 × 79,390.46
  4. Step 4: Simplify right side
    229,145.76x = 27,288,287,254.28
  5. Step 5: Solve for x
    x = 27,288,287,254.28/229,145.76
  6. Step 6: Final answer
    x = 119,087.03

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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.