Home / 400,928.56-553,275.16-219,638.96

Finding the Fourth Proportional to 400,928.56, 553,275.16 and 219,638.96

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Solution

The fourth proportional to 400,928.56, 553,275.16 and 219,638.96 is: 303,098.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,928.56 : 553,275.16 = 219,638.96 : x
  2. Step 2: Convert to fraction form
    400,928.56/553,275.16 = 219,638.96/x
  3. Step 3: Cross multiply
    400,928.56x = 553,275.16 × 219,638.96
  4. Step 4: Simplify right side
    400,928.56x = 121,520,780,736.23
  5. Step 5: Solve for x
    x = 121,520,780,736.23/400,928.56
  6. Step 6: Final answer
    x = 303,098.34

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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.