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Finding the Fourth Proportional to 286,751.72, 395,739.54 and 172,034.66

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Solution

The fourth proportional to 286,751.72, 395,739.54 and 172,034.66 is: 237,421.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,751.72 : 395,739.54 = 172,034.66 : x
  2. Step 2: Convert to fraction form
    286,751.72/395,739.54 = 172,034.66/x
  3. Step 3: Cross multiply
    286,751.72x = 395,739.54 × 172,034.66
  4. Step 4: Simplify right side
    286,751.72x = 68,080,917,212.46
  5. Step 5: Solve for x
    x = 68,080,917,212.46/286,751.72
  6. Step 6: Final answer
    x = 237,421.13

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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.