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Finding the Fourth Proportional to 400,859.24, 553,169.56 and 239,803.32

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Solution

The fourth proportional to 400,859.24, 553,169.56 and 239,803.32 is: 330,918.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,859.24 : 553,169.56 = 239,803.32 : x
  2. Step 2: Convert to fraction form
    400,859.24/553,169.56 = 239,803.32/x
  3. Step 3: Cross multiply
    400,859.24x = 553,169.56 × 239,803.32
  4. Step 4: Simplify right side
    400,859.24x = 132,651,897,010.94
  5. Step 5: Solve for x
    x = 132,651,897,010.94/400,859.24
  6. Step 6: Final answer
    x = 330,918.90

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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.