Home / 402,972.27-556,084.19-221,672.70

Finding the Fourth Proportional to 402,972.27, 556,084.19 and 221,672.70

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Solution

The fourth proportional to 402,972.27, 556,084.19 and 221,672.70 is: 305,898.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,972.27 : 556,084.19 = 221,672.70 : x
  2. Step 2: Convert to fraction form
    402,972.27/556,084.19 = 221,672.70/x
  3. Step 3: Cross multiply
    402,972.27x = 556,084.19 × 221,672.70
  4. Step 4: Simplify right side
    402,972.27x = 123,268,682,716.25
  5. Step 5: Solve for x
    x = 123,268,682,716.25/402,972.27
  6. Step 6: Final answer
    x = 305,898.67

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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.