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Finding the Fourth Proportional to 220,634.80, 330,877.92 and 70,838.32

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Solution

The fourth proportional to 220,634.80, 330,877.92 and 70,838.32 is: 106,233.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,634.80 : 330,877.92 = 70,838.32 : x
  2. Step 2: Convert to fraction form
    220,634.80/330,877.92 = 70,838.32/x
  3. Step 3: Cross multiply
    220,634.80x = 330,877.92 × 70,838.32
  4. Step 4: Simplify right side
    220,634.80x = 23,438,835,977.89
  5. Step 5: Solve for x
    x = 23,438,835,977.89/220,634.80
  6. Step 6: Final answer
    x = 106,233.63

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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.