Home / 278,306.81-383,826.27-213,931.85

Finding the Fourth Proportional to 278,306.81, 383,826.27 and 213,931.85

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Solution

The fourth proportional to 278,306.81, 383,826.27 and 213,931.85 is: 295,043.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,306.81 : 383,826.27 = 213,931.85 : x
  2. Step 2: Convert to fraction form
    278,306.81/383,826.27 = 213,931.85/x
  3. Step 3: Cross multiply
    278,306.81x = 383,826.27 × 213,931.85
  4. Step 4: Simplify right side
    278,306.81x = 82,112,662,100.57
  5. Step 5: Solve for x
    x = 82,112,662,100.57/278,306.81
  6. Step 6: Final answer
    x = 295,043.67

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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.