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Finding the Fourth Proportional to 199,726.80, 299,719.80 and 115,486.80

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Solution

The fourth proportional to 199,726.80, 299,719.80 and 115,486.80 is: 173,305.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,726.80 : 299,719.80 = 115,486.80 : x
  2. Step 2: Convert to fraction form
    199,726.80/299,719.80 = 115,486.80/x
  3. Step 3: Cross multiply
    199,726.80x = 299,719.80 × 115,486.80
  4. Step 4: Simplify right side
    199,726.80x = 34,613,680,598.64
  5. Step 5: Solve for x
    x = 34,613,680,598.64/199,726.80
  6. Step 6: Final answer
    x = 173,305.14

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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.