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Finding the Fourth Proportional to 211,693.80, 317,672.46 and 131,888.55

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Solution

The fourth proportional to 211,693.80, 317,672.46 and 131,888.55 is: 197,914.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,693.80 : 317,672.46 = 131,888.55 : x
  2. Step 2: Convert to fraction form
    211,693.80/317,672.46 = 131,888.55/x
  3. Step 3: Cross multiply
    211,693.80x = 317,672.46 × 131,888.55
  4. Step 4: Simplify right side
    211,693.80x = 41,897,360,124.33
  5. Step 5: Solve for x
    x = 41,897,360,124.33/211,693.80
  6. Step 6: Final answer
    x = 197,914.91

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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.