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Finding the Fourth Proportional to 258,462.59, 387,642.78 and 245,645.92

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Solution

The fourth proportional to 258,462.59, 387,642.78 and 245,645.92 is: 368,420.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,462.59 : 387,642.78 = 245,645.92 : x
  2. Step 2: Convert to fraction form
    258,462.59/387,642.78 = 245,645.92/x
  3. Step 3: Cross multiply
    258,462.59x = 387,642.78 × 245,645.92
  4. Step 4: Simplify right side
    258,462.59x = 95,222,867,324.46
  5. Step 5: Solve for x
    x = 95,222,867,324.46/258,462.59
  6. Step 6: Final answer
    x = 368,420.31

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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.