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Finding the Fourth Proportional to 229,639.20, 344,458.80 and 136,250.40

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Solution

The fourth proportional to 229,639.20, 344,458.80 and 136,250.40 is: 204,375.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,639.20 : 344,458.80 = 136,250.40 : x
  2. Step 2: Convert to fraction form
    229,639.20/344,458.80 = 136,250.40/x
  3. Step 3: Cross multiply
    229,639.20x = 344,458.80 × 136,250.40
  4. Step 4: Simplify right side
    229,639.20x = 46,932,649,283.52
  5. Step 5: Solve for x
    x = 46,932,649,283.52/229,639.20
  6. Step 6: Final answer
    x = 204,375.60

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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.