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Finding the Fourth Proportional to 219,496.88, 302,920.92 and 123,968.72

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Solution

The fourth proportional to 219,496.88, 302,920.92 and 123,968.72 is: 171,085.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,496.88 : 302,920.92 = 123,968.72 : x
  2. Step 2: Convert to fraction form
    219,496.88/302,920.92 = 123,968.72/x
  3. Step 3: Cross multiply
    219,496.88x = 302,920.92 × 123,968.72
  4. Step 4: Simplify right side
    219,496.88x = 37,552,718,713.62
  5. Step 5: Solve for x
    x = 37,552,718,713.62/219,496.88
  6. Step 6: Final answer
    x = 171,085.43

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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.