Home / 400,787.56-553,086.83-219,499.92

Finding the Fourth Proportional to 400,787.56, 553,086.83 and 219,499.92

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Solution

The fourth proportional to 400,787.56, 553,086.83 and 219,499.92 is: 302,909.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,787.56 : 553,086.83 = 219,499.92 : x
  2. Step 2: Convert to fraction form
    400,787.56/553,086.83 = 219,499.92/x
  3. Step 3: Cross multiply
    400,787.56x = 553,086.83 × 219,499.92
  4. Step 4: Simplify right side
    400,787.56x = 121,402,515,486.80
  5. Step 5: Solve for x
    x = 121,402,515,486.80/400,787.56
  6. Step 6: Final answer
    x = 302,909.89

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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.