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Finding the Fourth Proportional to 378,842.80, 568,353.12 and 112,605.52

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Solution

The fourth proportional to 378,842.80, 568,353.12 and 112,605.52 is: 168,934.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,842.80 : 568,353.12 = 112,605.52 : x
  2. Step 2: Convert to fraction form
    378,842.80/568,353.12 = 112,605.52/x
  3. Step 3: Cross multiply
    378,842.80x = 568,353.12 × 112,605.52
  4. Step 4: Simplify right side
    378,842.80x = 63,999,698,621.22
  5. Step 5: Solve for x
    x = 63,999,698,621.22/378,842.80
  6. Step 6: Final answer
    x = 168,934.71

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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.