Home / 226,428.20-339,642.30-128,124.20

Finding the Fourth Proportional to 226,428.20, 339,642.30 and 128,124.20

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Solution

The fourth proportional to 226,428.20, 339,642.30 and 128,124.20 is: 192,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,428.20 : 339,642.30 = 128,124.20 : x
  2. Step 2: Convert to fraction form
    226,428.20/339,642.30 = 128,124.20/x
  3. Step 3: Cross multiply
    226,428.20x = 339,642.30 × 128,124.20
  4. Step 4: Simplify right side
    226,428.20x = 43,516,397,973.66
  5. Step 5: Solve for x
    x = 43,516,397,973.66/226,428.20
  6. Step 6: Final answer
    x = 192,186.30

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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.