Home / 219,023.80-302,249.78-123,561.25

Finding the Fourth Proportional to 219,023.80, 302,249.78 and 123,561.25

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Solution

The fourth proportional to 219,023.80, 302,249.78 and 123,561.25 is: 170,512.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,023.80 : 302,249.78 = 123,561.25 : x
  2. Step 2: Convert to fraction form
    219,023.80/302,249.78 = 123,561.25/x
  3. Step 3: Cross multiply
    219,023.80x = 302,249.78 × 123,561.25
  4. Step 4: Simplify right side
    219,023.80x = 37,346,359,718.95
  5. Step 5: Solve for x
    x = 37,346,359,718.95/219,023.80
  6. Step 6: Final answer
    x = 170,512.79

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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.