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Finding the Fourth Proportional to 230,680.80, 346,021.20 and 72,957.60

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Solution

The fourth proportional to 230,680.80, 346,021.20 and 72,957.60 is: 109,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,680.80 : 346,021.20 = 72,957.60 : x
  2. Step 2: Convert to fraction form
    230,680.80/346,021.20 = 72,957.60/x
  3. Step 3: Cross multiply
    230,680.80x = 346,021.20 × 72,957.60
  4. Step 4: Simplify right side
    230,680.80x = 25,244,876,301.12
  5. Step 5: Solve for x
    x = 25,244,876,301.12/230,680.80
  6. Step 6: Final answer
    x = 109,436.40

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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.