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Finding the Fourth Proportional to 339,154.39, 468,034.86 and 211,903.78

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Solution

The fourth proportional to 339,154.39, 468,034.86 and 211,903.78 is: 292,428.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,154.39 : 468,034.86 = 211,903.78 : x
  2. Step 2: Convert to fraction form
    339,154.39/468,034.86 = 211,903.78/x
  3. Step 3: Cross multiply
    339,154.39x = 468,034.86 × 211,903.78
  4. Step 4: Simplify right side
    339,154.39x = 99,178,356,005.77
  5. Step 5: Solve for x
    x = 99,178,356,005.77/339,154.39
  6. Step 6: Final answer
    x = 292,428.34

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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.