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Finding the Fourth Proportional to 215,406.88, 323,085.60 and 57,647.64

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Solution

The fourth proportional to 215,406.88, 323,085.60 and 57,647.64 is: 86,464.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,406.88 : 323,085.60 = 57,647.64 : x
  2. Step 2: Convert to fraction form
    215,406.88/323,085.60 = 57,647.64/x
  3. Step 3: Cross multiply
    215,406.88x = 323,085.60 × 57,647.64
  4. Step 4: Simplify right side
    215,406.88x = 18,625,122,357.98
  5. Step 5: Solve for x
    x = 18,625,122,357.98/215,406.88
  6. Step 6: Final answer
    x = 86,464.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.