Home / 400,836.54-553,154.50-219,554.97

Finding the Fourth Proportional to 400,836.54, 553,154.50 and 219,554.97

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Solution

The fourth proportional to 400,836.54, 553,154.50 and 219,554.97 is: 302,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,836.54 : 553,154.50 = 219,554.97 : x
  2. Step 2: Convert to fraction form
    400,836.54/553,154.50 = 219,554.97/x
  3. Step 3: Cross multiply
    400,836.54x = 553,154.50 × 219,554.97
  4. Step 4: Simplify right side
    400,836.54x = 121,447,819,652.87
  5. Step 5: Solve for x
    x = 121,447,819,652.87/400,836.54
  6. Step 6: Final answer
    x = 302,985.90

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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.