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Finding the Fourth Proportional to 551,639.80, 827,459.70 and 196,665.40

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Solution

The fourth proportional to 551,639.80, 827,459.70 and 196,665.40 is: 294,998.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,639.80 : 827,459.70 = 196,665.40 : x
  2. Step 2: Convert to fraction form
    551,639.80/827,459.70 = 196,665.40/x
  3. Step 3: Cross multiply
    551,639.80x = 827,459.70 × 196,665.40
  4. Step 4: Simplify right side
    551,639.80x = 162,732,692,884.38
  5. Step 5: Solve for x
    x = 162,732,692,884.38/551,639.80
  6. Step 6: Final answer
    x = 294,998.10

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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.