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Finding the Fourth Proportional to 316,309.19, 436,506.17 and 173,069.80

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Solution

The fourth proportional to 316,309.19, 436,506.17 and 173,069.80 is: 238,836.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,309.19 : 436,506.17 = 173,069.80 : x
  2. Step 2: Convert to fraction form
    316,309.19/436,506.17 = 173,069.80/x
  3. Step 3: Cross multiply
    316,309.19x = 436,506.17 × 173,069.80
  4. Step 4: Simplify right side
    316,309.19x = 75,546,033,584.05
  5. Step 5: Solve for x
    x = 75,546,033,584.05/316,309.19
  6. Step 6: Final answer
    x = 238,836.04

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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.