Home / 330,389.40-455,683.68-222,789

Finding the Fourth Proportional to 330,389.40, 455,683.68 and 222,789

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Solution

The fourth proportional to 330,389.40, 455,683.68 and 222,789 is: 307,277.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,389.40 : 455,683.68 = 222,789 : x
  2. Step 2: Convert to fraction form
    330,389.40/455,683.68 = 222,789/x
  3. Step 3: Cross multiply
    330,389.40x = 455,683.68 × 222,789
  4. Step 4: Simplify right side
    330,389.40x = 101,521,311,383.52
  5. Step 5: Solve for x
    x = 101,521,311,383.52/330,389.40
  6. Step 6: Final answer
    x = 307,277.75

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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.