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Finding the Fourth Proportional to 247,008.91, 340,867.84 and 139,576.63

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Solution

The fourth proportional to 247,008.91, 340,867.84 and 139,576.63 is: 192,613.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,008.91 : 340,867.84 = 139,576.63 : x
  2. Step 2: Convert to fraction form
    247,008.91/340,867.84 = 139,576.63/x
  3. Step 3: Cross multiply
    247,008.91x = 340,867.84 × 139,576.63
  4. Step 4: Simplify right side
    247,008.91x = 47,577,184,382.58
  5. Step 5: Solve for x
    x = 47,577,184,382.58/247,008.91
  6. Step 6: Final answer
    x = 192,613.23

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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.