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Finding the Fourth Proportional to 225,838.80, 338,892.60 and 85,611.60

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Solution

The fourth proportional to 225,838.80, 338,892.60 and 85,611.60 is: 128,468.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,838.80 : 338,892.60 = 85,611.60 : x
  2. Step 2: Convert to fraction form
    225,838.80/338,892.60 = 85,611.60/x
  3. Step 3: Cross multiply
    225,838.80x = 338,892.60 × 85,611.60
  4. Step 4: Simplify right side
    225,838.80x = 29,013,137,714.16
  5. Step 5: Solve for x
    x = 29,013,137,714.16/225,838.80
  6. Step 6: Final answer
    x = 128,468.35

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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.