Home / 226,430.20-339,645.30-128,126.20

Finding the Fourth Proportional to 226,430.20, 339,645.30 and 128,126.20

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Solution

The fourth proportional to 226,430.20, 339,645.30 and 128,126.20 is: 192,189.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,430.20 : 339,645.30 = 128,126.20 : x
  2. Step 2: Convert to fraction form
    226,430.20/339,645.30 = 128,126.20/x
  3. Step 3: Cross multiply
    226,430.20x = 339,645.30 × 128,126.20
  4. Step 4: Simplify right side
    226,430.20x = 43,517,461,636.86
  5. Step 5: Solve for x
    x = 43,517,461,636.86/226,430.20
  6. Step 6: Final answer
    x = 192,189.30

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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.