Home / 400,927.79-553,257.10-219,608.15

Finding the Fourth Proportional to 400,927.79, 553,257.10 and 219,608.15

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Solution

The fourth proportional to 400,927.79, 553,257.10 and 219,608.15 is: 303,046.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,927.79 : 553,257.10 = 219,608.15 : x
  2. Step 2: Convert to fraction form
    400,927.79/553,257.10 = 219,608.15/x
  3. Step 3: Cross multiply
    400,927.79x = 553,257.10 × 219,608.15
  4. Step 4: Simplify right side
    400,927.79x = 121,499,768,205.37
  5. Step 5: Solve for x
    x = 121,499,768,205.37/400,927.79
  6. Step 6: Final answer
    x = 303,046.51

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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.