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Finding the Fourth Proportional to 339,139.38, 468,014.16 and 211,888.78

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Solution

The fourth proportional to 339,139.38, 468,014.16 and 211,888.78 is: 292,407.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,139.38 : 468,014.16 = 211,888.78 : x
  2. Step 2: Convert to fraction form
    339,139.38/468,014.16 = 211,888.78/x
  3. Step 3: Cross multiply
    339,139.38x = 468,014.16 × 211,888.78
  4. Step 4: Simplify right side
    339,139.38x = 99,166,949,385.12
  5. Step 5: Solve for x
    x = 99,166,949,385.12/339,139.38
  6. Step 6: Final answer
    x = 292,407.65

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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.