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Finding the Fourth Proportional to 317,872.67, 438,512.72 and 231,646.77

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Solution

The fourth proportional to 317,872.67, 438,512.72 and 231,646.77 is: 319,562.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,872.67 : 438,512.72 = 231,646.77 : x
  2. Step 2: Convert to fraction form
    317,872.67/438,512.72 = 231,646.77/x
  3. Step 3: Cross multiply
    317,872.67x = 438,512.72 × 231,646.77
  4. Step 4: Simplify right side
    317,872.67x = 101,580,054,033.68
  5. Step 5: Solve for x
    x = 101,580,054,033.68/317,872.67
  6. Step 6: Final answer
    x = 319,562.09

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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.