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Finding the Fourth Proportional to 259,884.24, 389,841.40 and 72,910.48

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Solution

The fourth proportional to 259,884.24, 389,841.40 and 72,910.48 is: 109,369.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,884.24 : 389,841.40 = 72,910.48 : x
  2. Step 2: Convert to fraction form
    259,884.24/389,841.40 = 72,910.48/x
  3. Step 3: Cross multiply
    259,884.24x = 389,841.40 × 72,910.48
  4. Step 4: Simplify right side
    259,884.24x = 28,423,523,597.87
  5. Step 5: Solve for x
    x = 28,423,523,597.87/259,884.24
  6. Step 6: Final answer
    x = 109,369.94

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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.