Home / 391,519.16-540,287.38-228,165.26

Finding the Fourth Proportional to 391,519.16, 540,287.38 and 228,165.26

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Solution

The fourth proportional to 391,519.16, 540,287.38 and 228,165.26 is: 314,862.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,519.16 : 540,287.38 = 228,165.26 : x
  2. Step 2: Convert to fraction form
    391,519.16/540,287.38 = 228,165.26/x
  3. Step 3: Cross multiply
    391,519.16x = 540,287.38 × 228,165.26
  4. Step 4: Simplify right side
    391,519.16x = 123,274,807,260.57
  5. Step 5: Solve for x
    x = 123,274,807,260.57/391,519.16
  6. Step 6: Final answer
    x = 314,862.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.