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Finding the Fourth Proportional to 221,797,312.40, 332,058,239.40 and 215,420,020.40

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Solution

The fourth proportional to 221,797,312.40, 332,058,239.40 and 215,420,020.40 is: 322,510,637.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,797,312.40 : 332,058,239.40 = 215,420,020.40 : x
  2. Step 2: Convert to fraction form
    221,797,312.40/332,058,239.40 = 215,420,020.40/x
  3. Step 3: Cross multiply
    221,797,312.40x = 332,058,239.40 × 215,420,020.40
  4. Step 4: Simplify right side
    221,797,312.40x = 71,531,992,705,536,080
  5. Step 5: Solve for x
    x = 71,531,992,705,536,080/221,797,312.40
  6. Step 6: Final answer
    x = 322,510,637.90

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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.