Home / 219,211.75-302,512.42-123,716.40

Finding the Fourth Proportional to 219,211.75, 302,512.42 and 123,716.40

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Solution

The fourth proportional to 219,211.75, 302,512.42 and 123,716.40 is: 170,728.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,211.75 : 302,512.42 = 123,716.40 : x
  2. Step 2: Convert to fraction form
    219,211.75/302,512.42 = 123,716.40/x
  3. Step 3: Cross multiply
    219,211.75x = 302,512.42 × 123,716.40
  4. Step 4: Simplify right side
    219,211.75x = 37,425,747,557.69
  5. Step 5: Solve for x
    x = 37,425,747,557.69/219,211.75
  6. Step 6: Final answer
    x = 170,728.75

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1.5x scale

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.