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Finding the Fourth Proportional to 220,107,909.80, 330,161,864.70 and 216,706,687.40

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Solution

The fourth proportional to 220,107,909.80, 330,161,864.70 and 216,706,687.40 is: 325,060,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,107,909.80 : 330,161,864.70 = 216,706,687.40 : x
  2. Step 2: Convert to fraction form
    220,107,909.80/330,161,864.70 = 216,706,687.40/x
  3. Step 3: Cross multiply
    220,107,909.80x = 330,161,864.70 × 216,706,687.40
  4. Step 4: Simplify right side
    220,107,909.80x = 71,548,284,004,943,992
  5. Step 5: Solve for x
    x = 71,548,284,004,943,992/220,107,909.80
  6. Step 6: Final answer
    x = 325,060,031.10

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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.