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Finding the Fourth Proportional to 211,458.56, 318,454.94 and 192,562.88

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Solution

The fourth proportional to 211,458.56, 318,454.94 and 192,562.88 is: 289,998.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,458.56 : 318,454.94 = 192,562.88 : x
  2. Step 2: Convert to fraction form
    211,458.56/318,454.94 = 192,562.88/x
  3. Step 3: Cross multiply
    211,458.56x = 318,454.94 × 192,562.88
  4. Step 4: Simplify right side
    211,458.56x = 61,322,600,396.63
  5. Step 5: Solve for x
    x = 61,322,600,396.63/211,458.56
  6. Step 6: Final answer
    x = 289,998.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.