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Finding the Fourth Proportional to 452,503.40, 678,902.73 and 215,815.34

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Solution

The fourth proportional to 452,503.40, 678,902.73 and 215,815.34 is: 323,793.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,503.40 : 678,902.73 = 215,815.34 : x
  2. Step 2: Convert to fraction form
    452,503.40/678,902.73 = 215,815.34/x
  3. Step 3: Cross multiply
    452,503.40x = 678,902.73 × 215,815.34
  4. Step 4: Simplify right side
    452,503.40x = 146,517,623,501.88
  5. Step 5: Solve for x
    x = 146,517,623,501.88/452,503.40
  6. Step 6: Final answer
    x = 323,793.42

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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.