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Finding the Fourth Proportional to 246,159.30, 339,706.95 and 138,723.42

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Solution

The fourth proportional to 246,159.30, 339,706.95 and 138,723.42 is: 191,442.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,159.30 : 339,706.95 = 138,723.42 : x
  2. Step 2: Convert to fraction form
    246,159.30/339,706.95 = 138,723.42/x
  3. Step 3: Cross multiply
    246,159.30x = 339,706.95 × 138,723.42
  4. Step 4: Simplify right side
    246,159.30x = 47,125,309,901.77
  5. Step 5: Solve for x
    x = 47,125,309,901.77/246,159.30
  6. Step 6: Final answer
    x = 191,442.33

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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.