Home / 216,912.30-325,417.05-83,780.70

Finding the Fourth Proportional to 216,912.30, 325,417.05 and 83,780.70

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Solution

The fourth proportional to 216,912.30, 325,417.05 and 83,780.70 is: 125,689.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,912.30 : 325,417.05 = 83,780.70 : x
  2. Step 2: Convert to fraction form
    216,912.30/325,417.05 = 83,780.70/x
  3. Step 3: Cross multiply
    216,912.30x = 325,417.05 × 83,780.70
  4. Step 4: Simplify right side
    216,912.30x = 27,263,668,240.94
  5. Step 5: Solve for x
    x = 27,263,668,240.94/216,912.30
  6. Step 6: Final answer
    x = 125,689.82

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1.5x scale

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.