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Finding the Fourth Proportional to 270,003.80, 405,005.70 and 217,515.80

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Solution

The fourth proportional to 270,003.80, 405,005.70 and 217,515.80 is: 326,273.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,003.80 : 405,005.70 = 217,515.80 : x
  2. Step 2: Convert to fraction form
    270,003.80/405,005.70 = 217,515.80/x
  3. Step 3: Cross multiply
    270,003.80x = 405,005.70 × 217,515.80
  4. Step 4: Simplify right side
    270,003.80x = 88,095,138,840.06
  5. Step 5: Solve for x
    x = 88,095,138,840.06/270,003.80
  6. Step 6: Final answer
    x = 326,273.70

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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.