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Finding the Fourth Proportional to 222,078.20, 333,117.30 and 128,823.80

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Solution

The fourth proportional to 222,078.20, 333,117.30 and 128,823.80 is: 193,235.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,078.20 : 333,117.30 = 128,823.80 : x
  2. Step 2: Convert to fraction form
    222,078.20/333,117.30 = 128,823.80/x
  3. Step 3: Cross multiply
    222,078.20x = 333,117.30 × 128,823.80
  4. Step 4: Simplify right side
    222,078.20x = 42,913,436,431.74
  5. Step 5: Solve for x
    x = 42,913,436,431.74/222,078.20
  6. Step 6: Final answer
    x = 193,235.70

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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.