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Finding the Fourth Proportional to 378,351.78, 567,529.71 and 112,114.59

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Solution

The fourth proportional to 378,351.78, 567,529.71 and 112,114.59 is: 168,172.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,351.78 : 567,529.71 = 112,114.59 : x
  2. Step 2: Convert to fraction form
    378,351.78/567,529.71 = 112,114.59/x
  3. Step 3: Cross multiply
    378,351.78x = 567,529.71 × 112,114.59
  4. Step 4: Simplify right side
    378,351.78x = 63,628,360,749.47
  5. Step 5: Solve for x
    x = 63,628,360,749.47/378,351.78
  6. Step 6: Final answer
    x = 168,172.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.