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Finding the Fourth Proportional to 222,729.60, 333,640.80 and 138,230.40

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Solution

The fourth proportional to 222,729.60, 333,640.80 and 138,230.40 is: 207,064.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,729.60 : 333,640.80 = 138,230.40 : x
  2. Step 2: Convert to fraction form
    222,729.60/333,640.80 = 138,230.40/x
  3. Step 3: Cross multiply
    222,729.60x = 333,640.80 × 138,230.40
  4. Step 4: Simplify right side
    222,729.60x = 46,119,301,240.32
  5. Step 5: Solve for x
    x = 46,119,301,240.32/222,729.60
  6. Step 6: Final answer
    x = 207,064.09

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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.