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Finding the Fourth Proportional to 246,387.90, 340,014.43 and 138,957.30

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Solution

The fourth proportional to 246,387.90, 340,014.43 and 138,957.30 is: 191,760.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,387.90 : 340,014.43 = 138,957.30 : x
  2. Step 2: Convert to fraction form
    246,387.90/340,014.43 = 138,957.30/x
  3. Step 3: Cross multiply
    246,387.90x = 340,014.43 × 138,957.30
  4. Step 4: Simplify right side
    246,387.90x = 47,247,487,153.84
  5. Step 5: Solve for x
    x = 47,247,487,153.84/246,387.90
  6. Step 6: Final answer
    x = 191,760.58

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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.