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Finding the Fourth Proportional to 360,218.36, 540,287.22 and 138,446.84

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Solution

The fourth proportional to 360,218.36, 540,287.22 and 138,446.84 is: 207,654.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,218.36 : 540,287.22 = 138,446.84 : x
  2. Step 2: Convert to fraction form
    360,218.36/540,287.22 = 138,446.84/x
  3. Step 3: Cross multiply
    360,218.36x = 540,287.22 × 138,446.84
  4. Step 4: Simplify right side
    360,218.36x = 74,801,058,301.38
  5. Step 5: Solve for x
    x = 74,801,058,301.38/360,218.36
  6. Step 6: Final answer
    x = 207,654.76

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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.