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Finding the Fourth Proportional to 401,110.74, 553,532.61 and 239,972.34

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Solution

The fourth proportional to 401,110.74, 553,532.61 and 239,972.34 is: 331,161.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,110.74 : 553,532.61 = 239,972.34 : x
  2. Step 2: Convert to fraction form
    401,110.74/553,532.61 = 239,972.34/x
  3. Step 3: Cross multiply
    401,110.74x = 553,532.61 × 239,972.34
  4. Step 4: Simplify right side
    401,110.74x = 132,832,515,688.01
  5. Step 5: Solve for x
    x = 132,832,515,688.01/401,110.74
  6. Step 6: Final answer
    x = 331,161.70

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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.