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Finding the Fourth Proportional to 400,635.52, 552,838.72 and 239,458.56

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Solution

The fourth proportional to 400,635.52, 552,838.72 and 239,458.56 is: 330,429.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,635.52 : 552,838.72 = 239,458.56 : x
  2. Step 2: Convert to fraction form
    400,635.52/552,838.72 = 239,458.56/x
  3. Step 3: Cross multiply
    400,635.52x = 552,838.72 × 239,458.56
  4. Step 4: Simplify right side
    400,635.52x = 132,381,963,803.44
  5. Step 5: Solve for x
    x = 132,381,963,803.44/400,635.52
  6. Step 6: Final answer
    x = 330,429.92

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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.