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Finding the Fourth Proportional to 479,192.74, 661,298.45 and 261,405.16

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Solution

The fourth proportional to 479,192.74, 661,298.45 and 261,405.16 is: 360,745.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,192.74 : 661,298.45 = 261,405.16 : x
  2. Step 2: Convert to fraction form
    479,192.74/661,298.45 = 261,405.16/x
  3. Step 3: Cross multiply
    479,192.74x = 661,298.45 × 261,405.16
  4. Step 4: Simplify right side
    479,192.74x = 172,866,824,169.73
  5. Step 5: Solve for x
    x = 172,866,824,169.73/479,192.74
  6. Step 6: Final answer
    x = 360,745.92

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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.