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Finding the Fourth Proportional to 215,784,000.28, 323,676,000.42 and 215,784,000.28

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Solution

The fourth proportional to 215,784,000.28, 323,676,000.42 and 215,784,000.28 is: 323,676,000.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,784,000.28 : 323,676,000.42 = 215,784,000.28 : x
  2. Step 2: Convert to fraction form
    215,784,000.28/323,676,000.42 = 215,784,000.28/x
  3. Step 3: Cross multiply
    215,784,000.28x = 323,676,000.42 × 215,784,000.28
  4. Step 4: Simplify right side
    215,784,000.28x = 69,844,102,162,561,264
  5. Step 5: Solve for x
    x = 69,844,102,162,561,264/215,784,000.28
  6. Step 6: Final answer
    x = 323,676,000.42

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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.