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Finding the Fourth Proportional to 375,451.20, 518,119.96 and 203,365.28

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Solution

The fourth proportional to 375,451.20, 518,119.96 and 203,365.28 is: 280,642.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,451.20 : 518,119.96 = 203,365.28 : x
  2. Step 2: Convert to fraction form
    375,451.20/518,119.96 = 203,365.28/x
  3. Step 3: Cross multiply
    375,451.20x = 518,119.96 × 203,365.28
  4. Step 4: Simplify right side
    375,451.20x = 105,367,610,738.99
  5. Step 5: Solve for x
    x = 105,367,610,738.99/375,451.20
  6. Step 6: Final answer
    x = 280,642.63

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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.