Home / 400,876.61-553,190.05-219,589.34

Finding the Fourth Proportional to 400,876.61, 553,190.05 and 219,589.34

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Solution

The fourth proportional to 400,876.61, 553,190.05 and 219,589.34 is: 303,022.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,876.61 : 553,190.05 = 219,589.34 : x
  2. Step 2: Convert to fraction form
    400,876.61/553,190.05 = 219,589.34/x
  3. Step 3: Cross multiply
    400,876.61x = 553,190.05 × 219,589.34
  4. Step 4: Simplify right side
    400,876.61x = 121,474,638,808.07
  5. Step 5: Solve for x
    x = 121,474,638,808.07/400,876.61
  6. Step 6: Final answer
    x = 303,022.52

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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.