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Finding the Fourth Proportional to 246,390.46, 340,018.36 and 138,960.16

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Solution

The fourth proportional to 246,390.46, 340,018.36 and 138,960.16 is: 191,764.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,390.46 : 340,018.36 = 138,960.16 : x
  2. Step 2: Convert to fraction form
    246,390.46/340,018.36 = 138,960.16/x
  3. Step 3: Cross multiply
    246,390.46x = 340,018.36 × 138,960.16
  4. Step 4: Simplify right side
    246,390.46x = 47,249,004,511.09
  5. Step 5: Solve for x
    x = 47,249,004,511.09/246,390.46
  6. Step 6: Final answer
    x = 191,764.75

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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.