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Finding the Fourth Proportional to 209,310.60, 314,038.80 and 91,066.80

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Solution

The fourth proportional to 209,310.60, 314,038.80 and 91,066.80 is: 136,631.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,310.60 : 314,038.80 = 91,066.80 : x
  2. Step 2: Convert to fraction form
    209,310.60/314,038.80 = 91,066.80/x
  3. Step 3: Cross multiply
    209,310.60x = 314,038.80 × 91,066.80
  4. Step 4: Simplify right side
    209,310.60x = 28,598,508,591.84
  5. Step 5: Solve for x
    x = 28,598,508,591.84/209,310.60
  6. Step 6: Final answer
    x = 136,631.92

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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.