Home / 318,849.21-440,194.91-211,564.71

Finding the Fourth Proportional to 318,849.21, 440,194.91 and 211,564.71

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Solution

The fourth proportional to 318,849.21, 440,194.91 and 211,564.71 is: 292,080.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,849.21 : 440,194.91 = 211,564.71 : x
  2. Step 2: Convert to fraction form
    318,849.21/440,194.91 = 211,564.71/x
  3. Step 3: Cross multiply
    318,849.21x = 440,194.91 × 211,564.71
  4. Step 4: Simplify right side
    318,849.21x = 93,129,707,419.80
  5. Step 5: Solve for x
    x = 93,129,707,419.80/318,849.21
  6. Step 6: Final answer
    x = 292,080.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.