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Finding the Fourth Proportional to 270,010.20, 405,015.30 and 217,522.20

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Solution

The fourth proportional to 270,010.20, 405,015.30 and 217,522.20 is: 326,283.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,010.20 : 405,015.30 = 217,522.20 : x
  2. Step 2: Convert to fraction form
    270,010.20/405,015.30 = 217,522.20/x
  3. Step 3: Cross multiply
    270,010.20x = 405,015.30 × 217,522.20
  4. Step 4: Simplify right side
    270,010.20x = 88,099,819,089.66
  5. Step 5: Solve for x
    x = 88,099,819,089.66/270,010.20
  6. Step 6: Final answer
    x = 326,283.30

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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.