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Finding the Fourth Proportional to 226,315.20, 339,472.80 and 121,339.20

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Solution

The fourth proportional to 226,315.20, 339,472.80 and 121,339.20 is: 182,008.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,315.20 : 339,472.80 = 121,339.20 : x
  2. Step 2: Convert to fraction form
    226,315.20/339,472.80 = 121,339.20/x
  3. Step 3: Cross multiply
    226,315.20x = 339,472.80 × 121,339.20
  4. Step 4: Simplify right side
    226,315.20x = 41,191,357,973.76
  5. Step 5: Solve for x
    x = 41,191,357,973.76/226,315.20
  6. Step 6: Final answer
    x = 182,008.80

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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.