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Finding the Fourth Proportional to 401,441.87, 553,938.74 and 229,370.97

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Solution

The fourth proportional to 401,441.87, 553,938.74 and 229,370.97 is: 316,502.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,441.87 : 553,938.74 = 229,370.97 : x
  2. Step 2: Convert to fraction form
    401,441.87/553,938.74 = 229,370.97/x
  3. Step 3: Cross multiply
    401,441.87x = 553,938.74 × 229,370.97
  4. Step 4: Simplify right side
    401,441.87x = 127,057,468,166.62
  5. Step 5: Solve for x
    x = 127,057,468,166.62/401,441.87
  6. Step 6: Final answer
    x = 316,502.78

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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.