Home / 211,867.55-317,647.24-99,489.86

Finding the Fourth Proportional to 211,867.55, 317,647.24 and 99,489.86

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Solution

The fourth proportional to 211,867.55, 317,647.24 and 99,489.86 is: 149,162.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,867.55 : 317,647.24 = 99,489.86 : x
  2. Step 2: Convert to fraction form
    211,867.55/317,647.24 = 99,489.86/x
  3. Step 3: Cross multiply
    211,867.55x = 317,647.24 × 99,489.86
  4. Step 4: Simplify right side
    211,867.55x = 31,602,679,436.99
  5. Step 5: Solve for x
    x = 31,602,679,436.99/211,867.55
  6. Step 6: Final answer
    x = 149,162.43

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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.