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Finding the Fourth Proportional to 242,336.80, 363,521.40 and 82,410.40

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Solution

The fourth proportional to 242,336.80, 363,521.40 and 82,410.40 is: 123,621.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,336.80 : 363,521.40 = 82,410.40 : x
  2. Step 2: Convert to fraction form
    242,336.80/363,521.40 = 82,410.40/x
  3. Step 3: Cross multiply
    242,336.80x = 363,521.40 × 82,410.40
  4. Step 4: Simplify right side
    242,336.80x = 29,957,943,982.56
  5. Step 5: Solve for x
    x = 29,957,943,982.56/242,336.80
  6. Step 6: Final answer
    x = 123,621.11

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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.