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Finding the Fourth Proportional to 316,387.15, 436,608.43 and 173,144.32

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Solution

The fourth proportional to 316,387.15, 436,608.43 and 173,144.32 is: 238,935.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,387.15 : 436,608.43 = 173,144.32 : x
  2. Step 2: Convert to fraction form
    316,387.15/436,608.43 = 173,144.32/x
  3. Step 3: Cross multiply
    316,387.15x = 436,608.43 × 173,144.32
  4. Step 4: Simplify right side
    316,387.15x = 75,596,269,718.62
  5. Step 5: Solve for x
    x = 75,596,269,718.62/316,387.15
  6. Step 6: Final answer
    x = 238,935.97

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1.5x scale

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.