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Finding the Fourth Proportional to 371,682.72, 557,212.80 and 259,032.48

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Solution

The fourth proportional to 371,682.72, 557,212.80 and 259,032.48 is: 388,331.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,682.72 : 557,212.80 = 259,032.48 : x
  2. Step 2: Convert to fraction form
    371,682.72/557,212.80 = 259,032.48/x
  3. Step 3: Cross multiply
    371,682.72x = 557,212.80 × 259,032.48
  4. Step 4: Simplify right side
    371,682.72x = 144,336,213,471.74
  5. Step 5: Solve for x
    x = 144,336,213,471.74/371,682.72
  6. Step 6: Final answer
    x = 388,331.78

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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.