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Finding the Fourth Proportional to 224,394.88, 309,634.28 and 128,901.56

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Solution

The fourth proportional to 224,394.88, 309,634.28 and 128,901.56 is: 177,866.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,394.88 : 309,634.28 = 128,901.56 : x
  2. Step 2: Convert to fraction form
    224,394.88/309,634.28 = 128,901.56/x
  3. Step 3: Cross multiply
    224,394.88x = 309,634.28 × 128,901.56
  4. Step 4: Simplify right side
    224,394.88x = 39,912,341,721.48
  5. Step 5: Solve for x
    x = 39,912,341,721.48/224,394.88
  6. Step 6: Final answer
    x = 177,866.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.