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Finding the Fourth Proportional to 538,744.78, 808,121.22 and 239,144.82

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Solution

The fourth proportional to 538,744.78, 808,121.22 and 239,144.82 is: 358,719.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,744.78 : 808,121.22 = 239,144.82 : x
  2. Step 2: Convert to fraction form
    538,744.78/808,121.22 = 239,144.82/x
  3. Step 3: Cross multiply
    538,744.78x = 808,121.22 × 239,144.82
  4. Step 4: Simplify right side
    538,744.78x = 193,258,001,113.02
  5. Step 5: Solve for x
    x = 193,258,001,113.02/538,744.78
  6. Step 6: Final answer
    x = 358,719.02

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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.