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Finding the Fourth Proportional to 361,658.02, 542,661.99 and 221,340.10

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Solution

The fourth proportional to 361,658.02, 542,661.99 and 221,340.10 is: 332,117.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,658.02 : 542,661.99 = 221,340.10 : x
  2. Step 2: Convert to fraction form
    361,658.02/542,661.99 = 221,340.10/x
  3. Step 3: Cross multiply
    361,658.02x = 542,661.99 × 221,340.10
  4. Step 4: Simplify right side
    361,658.02x = 120,112,859,132.80
  5. Step 5: Solve for x
    x = 120,112,859,132.80/361,658.02
  6. Step 6: Final answer
    x = 332,117.23

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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.