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Finding the Fourth Proportional to 222,421.60, 333,664.80 and 72,668.80

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Solution

The fourth proportional to 222,421.60, 333,664.80 and 72,668.80 is: 109,013.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,421.60 : 333,664.80 = 72,668.80 : x
  2. Step 2: Convert to fraction form
    222,421.60/333,664.80 = 72,668.80/x
  3. Step 3: Cross multiply
    222,421.60x = 333,664.80 × 72,668.80
  4. Step 4: Simplify right side
    222,421.60x = 24,247,020,618.24
  5. Step 5: Solve for x
    x = 24,247,020,618.24/222,421.60
  6. Step 6: Final answer
    x = 109,013.79

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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.