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Finding the Fourth Proportional to 355,679.40, 533,907.90 and 222,709.80

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Solution

The fourth proportional to 355,679.40, 533,907.90 and 222,709.80 is: 334,308.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,679.40 : 533,907.90 = 222,709.80 : x
  2. Step 2: Convert to fraction form
    355,679.40/533,907.90 = 222,709.80/x
  3. Step 3: Cross multiply
    355,679.40x = 533,907.90 × 222,709.80
  4. Step 4: Simplify right side
    355,679.40x = 118,906,521,627.42
  5. Step 5: Solve for x
    x = 118,906,521,627.42/355,679.40
  6. Step 6: Final answer
    x = 334,308.15

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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.