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Finding the Fourth Proportional to 259,191.19, 388,728.47 and 92,979.19

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Solution

The fourth proportional to 259,191.19, 388,728.47 and 92,979.19 is: 139,447.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,191.19 : 388,728.47 = 92,979.19 : x
  2. Step 2: Convert to fraction form
    259,191.19/388,728.47 = 92,979.19/x
  3. Step 3: Cross multiply
    259,191.19x = 388,728.47 × 92,979.19
  4. Step 4: Simplify right side
    259,191.19x = 36,143,658,465.89
  5. Step 5: Solve for x
    x = 36,143,658,465.89/259,191.19
  6. Step 6: Final answer
    x = 139,447.87

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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.