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Finding the Fourth Proportional to 226,643.60, 339,997.80 and 76,890.80

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Solution

The fourth proportional to 226,643.60, 339,997.80 and 76,890.80 is: 115,347.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,643.60 : 339,997.80 = 76,890.80 : x
  2. Step 2: Convert to fraction form
    226,643.60/339,997.80 = 76,890.80/x
  3. Step 3: Cross multiply
    226,643.60x = 339,997.80 × 76,890.80
  4. Step 4: Simplify right side
    226,643.60x = 26,142,702,840.24
  5. Step 5: Solve for x
    x = 26,142,702,840.24/226,643.60
  6. Step 6: Final answer
    x = 115,347.19

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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.