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Finding the Fourth Proportional to 226,309.96, 339,421.20 and 215,070.40

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Solution

The fourth proportional to 226,309.96, 339,421.20 and 215,070.40 is: 322,564.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,309.96 : 339,421.20 = 215,070.40 : x
  2. Step 2: Convert to fraction form
    226,309.96/339,421.20 = 215,070.40/x
  3. Step 3: Cross multiply
    226,309.96x = 339,421.20 × 215,070.40
  4. Step 4: Simplify right side
    226,309.96x = 72,999,453,252.48
  5. Step 5: Solve for x
    x = 72,999,453,252.48/226,309.96
  6. Step 6: Final answer
    x = 322,564.03

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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.