Home / 400,742.72-553,000.44-219,456.80

Finding the Fourth Proportional to 400,742.72, 553,000.44 and 219,456.80

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Solution

The fourth proportional to 400,742.72, 553,000.44 and 219,456.80 is: 302,836.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,742.72 : 553,000.44 = 219,456.80 : x
  2. Step 2: Convert to fraction form
    400,742.72/553,000.44 = 219,456.80/x
  3. Step 3: Cross multiply
    400,742.72x = 553,000.44 × 219,456.80
  4. Step 4: Simplify right side
    400,742.72x = 121,359,706,960.99
  5. Step 5: Solve for x
    x = 121,359,706,960.99/400,742.72
  6. Step 6: Final answer
    x = 302,836.96

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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.