Home / 398,926.64-550,517.55-217,637.27

Finding the Fourth Proportional to 398,926.64, 550,517.55 and 217,637.27

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Solution

The fourth proportional to 398,926.64, 550,517.55 and 217,637.27 is: 300,338.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,926.64 : 550,517.55 = 217,637.27 : x
  2. Step 2: Convert to fraction form
    398,926.64/550,517.55 = 217,637.27/x
  3. Step 3: Cross multiply
    398,926.64x = 550,517.55 × 217,637.27
  4. Step 4: Simplify right side
    398,926.64x = 119,813,133,916.50
  5. Step 5: Solve for x
    x = 119,813,133,916.50/398,926.64
  6. Step 6: Final answer
    x = 300,338.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.