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Finding the Fourth Proportional to 316,770.53, 475,150.77 and 76,886.42

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Solution

The fourth proportional to 316,770.53, 475,150.77 and 76,886.42 is: 115,328.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,770.53 : 475,150.77 = 76,886.42 : x
  2. Step 2: Convert to fraction form
    316,770.53/475,150.77 = 76,886.42/x
  3. Step 3: Cross multiply
    316,770.53x = 475,150.77 × 76,886.42
  4. Step 4: Simplify right side
    316,770.53x = 36,532,642,080.36
  5. Step 5: Solve for x
    x = 36,532,642,080.36/316,770.53
  6. Step 6: Final answer
    x = 115,328.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.