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Finding the Fourth Proportional to 309,242, 426,753.96 and 175,131.92

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Solution

The fourth proportional to 309,242, 426,753.96 and 175,131.92 is: 241,682.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,242 : 426,753.96 = 175,131.92 : x
  2. Step 2: Convert to fraction form
    309,242/426,753.96 = 175,131.92/x
  3. Step 3: Cross multiply
    309,242x = 426,753.96 × 175,131.92
  4. Step 4: Simplify right side
    309,242x = 74,738,240,382.40
  5. Step 5: Solve for x
    x = 74,738,240,382.40/309,242
  6. Step 6: Final answer
    x = 241,682.05

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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.