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Finding the Fourth Proportional to 339,158.42, 468,040.47 and 211,907.78

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Solution

The fourth proportional to 339,158.42, 468,040.47 and 211,907.78 is: 292,433.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,158.42 : 468,040.47 = 211,907.78 : x
  2. Step 2: Convert to fraction form
    339,158.42/468,040.47 = 211,907.78/x
  3. Step 3: Cross multiply
    339,158.42x = 468,040.47 × 211,907.78
  4. Step 4: Simplify right side
    339,158.42x = 99,181,416,947.86
  5. Step 5: Solve for x
    x = 99,181,416,947.86/339,158.42
  6. Step 6: Final answer
    x = 292,433.89

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1.5x scale

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.