Home / 314,983.82-471,949.76-221,321.90

Finding the Fourth Proportional to 314,983.82, 471,949.76 and 221,321.90

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Solution

The fourth proportional to 314,983.82, 471,949.76 and 221,321.90 is: 331,613.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,983.82 : 471,949.76 = 221,321.90 : x
  2. Step 2: Convert to fraction form
    314,983.82/471,949.76 = 221,321.90/x
  3. Step 3: Cross multiply
    314,983.82x = 471,949.76 × 221,321.90
  4. Step 4: Simplify right side
    314,983.82x = 104,452,817,587.74
  5. Step 5: Solve for x
    x = 104,452,817,587.74/314,983.82
  6. Step 6: Final answer
    x = 331,613.28

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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.