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Finding the Fourth Proportional to 317,808.67, 438,216.55 and 202,936.27

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Solution

The fourth proportional to 317,808.67, 438,216.55 and 202,936.27 is: 279,822.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,808.67 : 438,216.55 = 202,936.27 : x
  2. Step 2: Convert to fraction form
    317,808.67/438,216.55 = 202,936.27/x
  3. Step 3: Cross multiply
    317,808.67x = 438,216.55 × 202,936.27
  4. Step 4: Simplify right side
    317,808.67x = 88,930,032,109.27
  5. Step 5: Solve for x
    x = 88,930,032,109.27/317,808.67
  6. Step 6: Final answer
    x = 279,822.55

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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.