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Finding the Fourth Proportional to 400,960.26, 553,341.78 and 219,687.93

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Solution

The fourth proportional to 400,960.26, 553,341.78 and 219,687.93 is: 303,178.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,960.26 : 553,341.78 = 219,687.93 : x
  2. Step 2: Convert to fraction form
    400,960.26/553,341.78 = 219,687.93/x
  3. Step 3: Cross multiply
    400,960.26x = 553,341.78 × 219,687.93
  4. Step 4: Simplify right side
    400,960.26x = 121,562,510,230.72
  5. Step 5: Solve for x
    x = 121,562,510,230.72/400,960.26
  6. Step 6: Final answer
    x = 303,178.45

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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.