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Finding the Fourth Proportional to 211,540.60, 317,310.90 and 201,699.10

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Solution

The fourth proportional to 211,540.60, 317,310.90 and 201,699.10 is: 302,548.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,540.60 : 317,310.90 = 201,699.10 : x
  2. Step 2: Convert to fraction form
    211,540.60/317,310.90 = 201,699.10/x
  3. Step 3: Cross multiply
    211,540.60x = 317,310.90 × 201,699.10
  4. Step 4: Simplify right side
    211,540.60x = 64,001,322,950.19
  5. Step 5: Solve for x
    x = 64,001,322,950.19/211,540.60
  6. Step 6: Final answer
    x = 302,548.65

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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.