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Finding the Fourth Proportional to 211,191.68, 316,450.56 and 154,770.32

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Solution

The fourth proportional to 211,191.68, 316,450.56 and 154,770.32 is: 231,908.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,191.68 : 316,450.56 = 154,770.32 : x
  2. Step 2: Convert to fraction form
    211,191.68/316,450.56 = 154,770.32/x
  3. Step 3: Cross multiply
    211,191.68x = 316,450.56 × 154,770.32
  4. Step 4: Simplify right side
    211,191.68x = 48,977,154,435.38
  5. Step 5: Solve for x
    x = 48,977,154,435.38/211,191.68
  6. Step 6: Final answer
    x = 231,908.54

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1.5x scale

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.