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Finding the Fourth Proportional to 220,124.80, 329,312.40 and 190,867.60

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Solution

The fourth proportional to 220,124.80, 329,312.40 and 190,867.60 is: 285,542.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,124.80 : 329,312.40 = 190,867.60 : x
  2. Step 2: Convert to fraction form
    220,124.80/329,312.40 = 190,867.60/x
  3. Step 3: Cross multiply
    220,124.80x = 329,312.40 × 190,867.60
  4. Step 4: Simplify right side
    220,124.80x = 62,855,067,438.24
  5. Step 5: Solve for x
    x = 62,855,067,438.24/220,124.80
  6. Step 6: Final answer
    x = 285,542.87

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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.