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Finding the Fourth Proportional to 250,511.94, 345,705.75 and 137,334.78

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Solution

The fourth proportional to 250,511.94, 345,705.75 and 137,334.78 is: 189,521.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,511.94 : 345,705.75 = 137,334.78 : x
  2. Step 2: Convert to fraction form
    250,511.94/345,705.75 = 137,334.78/x
  3. Step 3: Cross multiply
    250,511.94x = 345,705.75 × 137,334.78
  4. Step 4: Simplify right side
    250,511.94x = 47,477,423,120.99
  5. Step 5: Solve for x
    x = 47,477,423,120.99/250,511.94
  6. Step 6: Final answer
    x = 189,521.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.