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Finding the Fourth Proportional to 316,625.64, 436,943.08 and 173,388.48

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Solution

The fourth proportional to 316,625.64, 436,943.08 and 173,388.48 is: 239,275.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,625.64 : 436,943.08 = 173,388.48 : x
  2. Step 2: Convert to fraction form
    316,625.64/436,943.08 = 173,388.48/x
  3. Step 3: Cross multiply
    316,625.64x = 436,943.08 × 173,388.48
  4. Step 4: Simplify right side
    316,625.64x = 75,760,896,487.72
  5. Step 5: Solve for x
    x = 75,760,896,487.72/316,625.64
  6. Step 6: Final answer
    x = 239,275.94

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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.