Home / 219,451.78-302,868.11-123,964.63

Finding the Fourth Proportional to 219,451.78, 302,868.11 and 123,964.63

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Solution

The fourth proportional to 219,451.78, 302,868.11 and 123,964.63 is: 171,085.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,451.78 : 302,868.11 = 123,964.63 : x
  2. Step 2: Convert to fraction form
    219,451.78/302,868.11 = 123,964.63/x
  3. Step 3: Cross multiply
    219,451.78x = 302,868.11 × 123,964.63
  4. Step 4: Simplify right side
    219,451.78x = 37,544,932,747.69
  5. Step 5: Solve for x
    x = 37,544,932,747.69/219,451.78
  6. Step 6: Final answer
    x = 171,085.11

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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.