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Finding the Fourth Proportional to 221,574.47, 332,291.99 and 71,780.01

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Solution

The fourth proportional to 221,574.47, 332,291.99 and 71,780.01 is: 107,647.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,574.47 : 332,291.99 = 71,780.01 : x
  2. Step 2: Convert to fraction form
    221,574.47/332,291.99 = 71,780.01/x
  3. Step 3: Cross multiply
    221,574.47x = 332,291.99 × 71,780.01
  4. Step 4: Simplify right side
    221,574.47x = 23,851,922,365.12
  5. Step 5: Solve for x
    x = 23,851,922,365.12/221,574.47
  6. Step 6: Final answer
    x = 107,647.43

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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.