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Finding the Fourth Proportional to 247,099.72, 340,995.12 and 138,202.92

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Solution

The fourth proportional to 247,099.72, 340,995.12 and 138,202.92 is: 190,718.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,099.72 : 340,995.12 = 138,202.92 : x
  2. Step 2: Convert to fraction form
    247,099.72/340,995.12 = 138,202.92/x
  3. Step 3: Cross multiply
    247,099.72x = 340,995.12 × 138,202.92
  4. Step 4: Simplify right side
    247,099.72x = 47,126,521,289.75
  5. Step 5: Solve for x
    x = 47,126,521,289.75/247,099.72
  6. Step 6: Final answer
    x = 190,718.63

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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.