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Finding the Fourth Proportional to 246,405.30, 340,039.22 and 138,975.10

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Solution

The fourth proportional to 246,405.30, 340,039.22 and 138,975.10 is: 191,785.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,405.30 : 340,039.22 = 138,975.10 : x
  2. Step 2: Convert to fraction form
    246,405.30/340,039.22 = 138,975.10/x
  3. Step 3: Cross multiply
    246,405.30x = 340,039.22 × 138,975.10
  4. Step 4: Simplify right side
    246,405.30x = 47,256,984,603.42
  5. Step 5: Solve for x
    x = 47,256,984,603.42/246,405.30
  6. Step 6: Final answer
    x = 191,785.58

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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.