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Finding the Fourth Proportional to 259,952.18, 389,928.30 and 72,958.82

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Solution

The fourth proportional to 259,952.18, 389,928.30 and 72,958.82 is: 109,438.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,952.18 : 389,928.30 = 72,958.82 : x
  2. Step 2: Convert to fraction form
    259,952.18/389,928.30 = 72,958.82/x
  3. Step 3: Cross multiply
    259,952.18x = 389,928.30 × 72,958.82
  4. Step 4: Simplify right side
    259,952.18x = 28,448,708,652.61
  5. Step 5: Solve for x
    x = 28,448,708,652.61/259,952.18
  6. Step 6: Final answer
    x = 109,438.24

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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.