Home / 400,828.77-553,143.94-219,540.65

Finding the Fourth Proportional to 400,828.77, 553,143.94 and 219,540.65

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Solution

The fourth proportional to 400,828.77, 553,143.94 and 219,540.65 is: 302,966.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,828.77 : 553,143.94 = 219,540.65 : x
  2. Step 2: Convert to fraction form
    400,828.77/553,143.94 = 219,540.65/x
  3. Step 3: Cross multiply
    400,828.77x = 553,143.94 × 219,540.65
  4. Step 4: Simplify right side
    400,828.77x = 121,437,576,816.59
  5. Step 5: Solve for x
    x = 121,437,576,816.59/400,828.77
  6. Step 6: Final answer
    x = 302,966.22

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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.