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Finding the Fourth Proportional to 247,240.20, 370,838.70 and 81,028.20

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Solution

The fourth proportional to 247,240.20, 370,838.70 and 81,028.20 is: 121,535.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,240.20 : 370,838.70 = 81,028.20 : x
  2. Step 2: Convert to fraction form
    247,240.20/370,838.70 = 81,028.20/x
  3. Step 3: Cross multiply
    247,240.20x = 370,838.70 × 81,028.20
  4. Step 4: Simplify right side
    247,240.20x = 30,048,392,351.34
  5. Step 5: Solve for x
    x = 30,048,392,351.34/247,240.20
  6. Step 6: Final answer
    x = 121,535.22

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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.