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Finding the Fourth Proportional to 221,218,936.40, 331,828,404.60 and 221,218,936.40

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Solution

The fourth proportional to 221,218,936.40, 331,828,404.60 and 221,218,936.40 is: 331,828,404.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,218,936.40 : 331,828,404.60 = 221,218,936.40 : x
  2. Step 2: Convert to fraction form
    221,218,936.40/331,828,404.60 = 221,218,936.40/x
  3. Step 3: Cross multiply
    221,218,936.40x = 331,828,404.60 × 221,218,936.40
  4. Step 4: Simplify right side
    221,218,936.40x = 73,406,726,732,920,880
  5. Step 5: Solve for x
    x = 73,406,726,732,920,880/221,218,936.40
  6. Step 6: Final answer
    x = 331,828,404.60

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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.