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Finding the Fourth Proportional to 226,749.20, 340,123.80 and 128,445.20

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Solution

The fourth proportional to 226,749.20, 340,123.80 and 128,445.20 is: 192,667.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,749.20 : 340,123.80 = 128,445.20 : x
  2. Step 2: Convert to fraction form
    226,749.20/340,123.80 = 128,445.20/x
  3. Step 3: Cross multiply
    226,749.20x = 340,123.80 × 128,445.20
  4. Step 4: Simplify right side
    226,749.20x = 43,687,269,515.76
  5. Step 5: Solve for x
    x = 43,687,269,515.76/226,749.20
  6. Step 6: Final answer
    x = 192,667.80

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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.