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Finding the Fourth Proportional to 316,770.66, 475,186.05 and 89,065.80

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Solution

The fourth proportional to 316,770.66, 475,186.05 and 89,065.80 is: 133,607.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,770.66 : 475,186.05 = 89,065.80 : x
  2. Step 2: Convert to fraction form
    316,770.66/475,186.05 = 89,065.80/x
  3. Step 3: Cross multiply
    316,770.66x = 475,186.05 × 89,065.80
  4. Step 4: Simplify right side
    316,770.66x = 42,322,825,692.09
  5. Step 5: Solve for x
    x = 42,322,825,692.09/316,770.66
  6. Step 6: Final answer
    x = 133,607.15

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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.