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Finding the Fourth Proportional to 400,898.77, 553,240.44 and 219,617.23

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Solution

The fourth proportional to 400,898.77, 553,240.44 and 219,617.23 is: 303,071.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,898.77 : 553,240.44 = 219,617.23 : x
  2. Step 2: Convert to fraction form
    400,898.77/553,240.44 = 219,617.23/x
  3. Step 3: Cross multiply
    400,898.77x = 553,240.44 × 219,617.23
  4. Step 4: Simplify right side
    400,898.77x = 121,501,131,573.68
  5. Step 5: Solve for x
    x = 121,501,131,573.68/400,898.77
  6. Step 6: Final answer
    x = 303,071.85

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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.