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Finding the Fourth Proportional to 286,301.53, 395,132.40 and 173,186.65

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Solution

The fourth proportional to 286,301.53, 395,132.40 and 173,186.65 is: 239,019.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,301.53 : 395,132.40 = 173,186.65 : x
  2. Step 2: Convert to fraction form
    286,301.53/395,132.40 = 173,186.65/x
  3. Step 3: Cross multiply
    286,301.53x = 395,132.40 × 173,186.65
  4. Step 4: Simplify right side
    286,301.53x = 68,431,656,662.46
  5. Step 5: Solve for x
    x = 68,431,656,662.46/286,301.53
  6. Step 6: Final answer
    x = 239,019.53

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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.