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Finding the Fourth Proportional to 226,148.76, 339,378.64 and 78,404.76

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Solution

The fourth proportional to 226,148.76, 339,378.64 and 78,404.76 is: 117,661.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,148.76 : 339,378.64 = 78,404.76 : x
  2. Step 2: Convert to fraction form
    226,148.76/339,378.64 = 78,404.76/x
  3. Step 3: Cross multiply
    226,148.76x = 339,378.64 × 78,404.76
  4. Step 4: Simplify right side
    226,148.76x = 26,608,900,818.33
  5. Step 5: Solve for x
    x = 26,608,900,818.33/226,148.76
  6. Step 6: Final answer
    x = 117,661.05

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1.5x scale

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.