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Finding the Fourth Proportional to 306,611.30, 459,917.07 and 137,934.60

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Solution

The fourth proportional to 306,611.30, 459,917.07 and 137,934.60 is: 206,901.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,611.30 : 459,917.07 = 137,934.60 : x
  2. Step 2: Convert to fraction form
    306,611.30/459,917.07 = 137,934.60/x
  3. Step 3: Cross multiply
    306,611.30x = 459,917.07 × 137,934.60
  4. Step 4: Simplify right side
    306,611.30x = 63,438,477,083.62
  5. Step 5: Solve for x
    x = 63,438,477,083.62/306,611.30
  6. Step 6: Final answer
    x = 206,901.95

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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.