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Finding the Fourth Proportional to 220,107.40, 330,161.10 and 206,985.40

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Solution

The fourth proportional to 220,107.40, 330,161.10 and 206,985.40 is: 310,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,107.40 : 330,161.10 = 206,985.40 : x
  2. Step 2: Convert to fraction form
    220,107.40/330,161.10 = 206,985.40/x
  3. Step 3: Cross multiply
    220,107.40x = 330,161.10 × 206,985.40
  4. Step 4: Simplify right side
    220,107.40x = 68,338,527,347.94
  5. Step 5: Solve for x
    x = 68,338,527,347.94/220,107.40
  6. Step 6: Final answer
    x = 310,478.10

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1.5x scale

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.