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Finding the Fourth Proportional to 259,219.50, 388,479.32 and 134,647.98

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Solution

The fourth proportional to 259,219.50, 388,479.32 and 134,647.98 is: 201,790.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,219.50 : 388,479.32 = 134,647.98 : x
  2. Step 2: Convert to fraction form
    259,219.50/388,479.32 = 134,647.98/x
  3. Step 3: Cross multiply
    259,219.50x = 388,479.32 × 134,647.98
  4. Step 4: Simplify right side
    259,219.50x = 52,307,955,709.77
  5. Step 5: Solve for x
    x = 52,307,955,709.77/259,219.50
  6. Step 6: Final answer
    x = 201,790.20

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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.