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Finding the Fourth Proportional to 252,299.76, 348,171.12 and 137,578.12

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Solution

The fourth proportional to 252,299.76, 348,171.12 and 137,578.12 is: 189,856.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,299.76 : 348,171.12 = 137,578.12 : x
  2. Step 2: Convert to fraction form
    252,299.76/348,171.12 = 137,578.12/x
  3. Step 3: Cross multiply
    252,299.76x = 348,171.12 × 137,578.12
  4. Step 4: Simplify right side
    252,299.76x = 47,900,728,127.89
  5. Step 5: Solve for x
    x = 47,900,728,127.89/252,299.76
  6. Step 6: Final answer
    x = 189,856.42

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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.