Home / 828,378.66-1,242,422.19-221,174.51

Finding the Fourth Proportional to 828,378.66, 1,242,422.19 and 221,174.51

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Solution

The fourth proportional to 828,378.66, 1,242,422.19 and 221,174.51 is: 331,722.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,378.66 : 1,242,422.19 = 221,174.51 : x
  2. Step 2: Convert to fraction form
    828,378.66/1,242,422.19 = 221,174.51/x
  3. Step 3: Cross multiply
    828,378.66x = 1,242,422.19 × 221,174.51
  4. Step 4: Simplify right side
    828,378.66x = 274,792,119,086.38
  5. Step 5: Solve for x
    x = 274,792,119,086.38/828,378.66
  6. Step 6: Final answer
    x = 331,722.84

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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.