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Finding the Fourth Proportional to 502,493.80, 753,740.70 and 221,866.60

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Solution

The fourth proportional to 502,493.80, 753,740.70 and 221,866.60 is: 332,799.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,493.80 : 753,740.70 = 221,866.60 : x
  2. Step 2: Convert to fraction form
    502,493.80/753,740.70 = 221,866.60/x
  3. Step 3: Cross multiply
    502,493.80x = 753,740.70 × 221,866.60
  4. Step 4: Simplify right side
    502,493.80x = 167,229,886,390.62
  5. Step 5: Solve for x
    x = 167,229,886,390.62/502,493.80
  6. Step 6: Final answer
    x = 332,799.90

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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.