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Finding the Fourth Proportional to 309,095.56, 426,562.42 and 173,135.32

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Solution

The fourth proportional to 309,095.56, 426,562.42 and 173,135.32 is: 238,932.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,095.56 : 426,562.42 = 173,135.32 : x
  2. Step 2: Convert to fraction form
    309,095.56/426,562.42 = 173,135.32/x
  3. Step 3: Cross multiply
    309,095.56x = 426,562.42 × 173,135.32
  4. Step 4: Simplify right side
    309,095.56x = 73,853,021,086.67
  5. Step 5: Solve for x
    x = 73,853,021,086.67/309,095.56
  6. Step 6: Final answer
    x = 238,932.65

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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.