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Finding the Fourth Proportional to 316,489.85, 436,760.80 and 173,263.22

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Solution

The fourth proportional to 316,489.85, 436,760.80 and 173,263.22 is: 239,105.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,489.85 : 436,760.80 = 173,263.22 : x
  2. Step 2: Convert to fraction form
    316,489.85/436,760.80 = 173,263.22/x
  3. Step 3: Cross multiply
    316,489.85x = 436,760.80 × 173,263.22
  4. Step 4: Simplify right side
    316,489.85x = 75,674,582,577.78
  5. Step 5: Solve for x
    x = 75,674,582,577.78/316,489.85
  6. Step 6: Final answer
    x = 239,105.88

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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.