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Finding the Fourth Proportional to 557,640.13, 836,478.38 and 265,456.55

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Solution

The fourth proportional to 557,640.13, 836,478.38 and 265,456.55 is: 398,193.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,640.13 : 836,478.38 = 265,456.55 : x
  2. Step 2: Convert to fraction form
    557,640.13/836,478.38 = 265,456.55/x
  3. Step 3: Cross multiply
    557,640.13x = 836,478.38 × 265,456.55
  4. Step 4: Simplify right side
    557,640.13x = 222,048,663,526.97
  5. Step 5: Solve for x
    x = 222,048,663,526.97/557,640.13
  6. Step 6: Final answer
    x = 398,193.48

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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.