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Finding the Fourth Proportional to 279,291.90, 384,449.49 and 243,419.64

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Solution

The fourth proportional to 279,291.90, 384,449.49 and 243,419.64 is: 335,070.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,291.90 : 384,449.49 = 243,419.64 : x
  2. Step 2: Convert to fraction form
    279,291.90/384,449.49 = 243,419.64/x
  3. Step 3: Cross multiply
    279,291.90x = 384,449.49 × 243,419.64
  4. Step 4: Simplify right side
    279,291.90x = 93,582,556,453.98
  5. Step 5: Solve for x
    x = 93,582,556,453.98/279,291.90
  6. Step 6: Final answer
    x = 335,070.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.