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Finding the Fourth Proportional to 360,018.70, 540,028.05 and 218,301.10

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Solution

The fourth proportional to 360,018.70, 540,028.05 and 218,301.10 is: 327,451.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,018.70 : 540,028.05 = 218,301.10 : x
  2. Step 2: Convert to fraction form
    360,018.70/540,028.05 = 218,301.10/x
  3. Step 3: Cross multiply
    360,018.70x = 540,028.05 × 218,301.10
  4. Step 4: Simplify right side
    360,018.70x = 117,888,717,345.86
  5. Step 5: Solve for x
    x = 117,888,717,345.86/360,018.70
  6. Step 6: Final answer
    x = 327,451.65

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Similar ratio
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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.