Home / 828,378.63-1,242,422.15-221,174.48

Finding the Fourth Proportional to 828,378.63, 1,242,422.15 and 221,174.48

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Solution

The fourth proportional to 828,378.63, 1,242,422.15 and 221,174.48 is: 331,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,378.63 : 1,242,422.15 = 221,174.48 : x
  2. Step 2: Convert to fraction form
    828,378.63/1,242,422.15 = 221,174.48/x
  3. Step 3: Cross multiply
    828,378.63x = 1,242,422.15 × 221,174.48
  4. Step 4: Simplify right side
    828,378.63x = 274,792,074,966.92
  5. Step 5: Solve for x
    x = 274,792,074,966.92/828,378.63
  6. Step 6: Final answer
    x = 331,722.80

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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.