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Finding the Fourth Proportional to 270,012.60, 404,759.70 and 210,007.80

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Solution

The fourth proportional to 270,012.60, 404,759.70 and 210,007.80 is: 314,810.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,012.60 : 404,759.70 = 210,007.80 : x
  2. Step 2: Convert to fraction form
    270,012.60/404,759.70 = 210,007.80/x
  3. Step 3: Cross multiply
    270,012.60x = 404,759.70 × 210,007.80
  4. Step 4: Simplify right side
    270,012.60x = 85,002,694,125.66
  5. Step 5: Solve for x
    x = 85,002,694,125.66/270,012.60
  6. Step 6: Final answer
    x = 314,810.10

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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.