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Finding the Fourth Proportional to 270,278.96, 405,467.84 and 90,347.36

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Solution

The fourth proportional to 270,278.96, 405,467.84 and 90,347.36 is: 135,537.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,278.96 : 405,467.84 = 90,347.36 : x
  2. Step 2: Convert to fraction form
    270,278.96/405,467.84 = 90,347.36/x
  3. Step 3: Cross multiply
    270,278.96x = 405,467.84 × 90,347.36
  4. Step 4: Simplify right side
    270,278.96x = 36,632,948,908.90
  5. Step 5: Solve for x
    x = 36,632,948,908.90/270,278.96
  6. Step 6: Final answer
    x = 135,537.55

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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.