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Finding the Fourth Proportional to 247,275.70, 341,258.81 and 138,390.96

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Solution

The fourth proportional to 247,275.70, 341,258.81 and 138,390.96 is: 190,989.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,275.70 : 341,258.81 = 138,390.96 : x
  2. Step 2: Convert to fraction form
    247,275.70/341,258.81 = 138,390.96/x
  3. Step 3: Cross multiply
    247,275.70x = 341,258.81 × 138,390.96
  4. Step 4: Simplify right side
    247,275.70x = 47,227,134,324.36
  5. Step 5: Solve for x
    x = 47,227,134,324.36/247,275.70
  6. Step 6: Final answer
    x = 190,989.79

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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.