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Finding the Fourth Proportional to 371,684.72, 557,215.80 and 259,034.48

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Solution

The fourth proportional to 371,684.72, 557,215.80 and 259,034.48 is: 388,334.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,684.72 : 557,215.80 = 259,034.48 : x
  2. Step 2: Convert to fraction form
    371,684.72/557,215.80 = 259,034.48/x
  3. Step 3: Cross multiply
    371,684.72x = 557,215.80 × 259,034.48
  4. Step 4: Simplify right side
    371,684.72x = 144,338,105,000.78
  5. Step 5: Solve for x
    x = 144,338,105,000.78/371,684.72
  6. Step 6: Final answer
    x = 388,334.78

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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.