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Finding the Fourth Proportional to 424,422, 636,497.74 and 140,059.56

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Solution

The fourth proportional to 424,422, 636,497.74 and 140,059.56 is: 210,044.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,422 : 636,497.74 = 140,059.56 : x
  2. Step 2: Convert to fraction form
    424,422/636,497.74 = 140,059.56/x
  3. Step 3: Cross multiply
    424,422x = 636,497.74 × 140,059.56
  4. Step 4: Simplify right side
    424,422x = 89,147,593,405.39
  5. Step 5: Solve for x
    x = 89,147,593,405.39/424,422
  6. Step 6: Final answer
    x = 210,044.70

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1.5x scale

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.