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Finding the Fourth Proportional to 313,396.90, 469,404.15 and 271,924.90

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Solution

The fourth proportional to 313,396.90, 469,404.15 and 271,924.90 is: 407,287.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,396.90 : 469,404.15 = 271,924.90 : x
  2. Step 2: Convert to fraction form
    313,396.90/469,404.15 = 271,924.90/x
  3. Step 3: Cross multiply
    313,396.90x = 469,404.15 × 271,924.90
  4. Step 4: Simplify right side
    313,396.90x = 127,642,676,548.34
  5. Step 5: Solve for x
    x = 127,642,676,548.34/313,396.90
  6. Step 6: Final answer
    x = 407,287.62

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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.