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Finding the Fourth Proportional to 355,690.40, 533,924.40 and 222,720.80

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Solution

The fourth proportional to 355,690.40, 533,924.40 and 222,720.80 is: 334,324.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,690.40 : 533,924.40 = 222,720.80 : x
  2. Step 2: Convert to fraction form
    355,690.40/533,924.40 = 222,720.80/x
  3. Step 3: Cross multiply
    355,690.40x = 533,924.40 × 222,720.80
  4. Step 4: Simplify right side
    355,690.40x = 118,916,069,507.52
  5. Step 5: Solve for x
    x = 118,916,069,507.52/355,690.40
  6. Step 6: Final answer
    x = 334,324.65

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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.