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Finding the Fourth Proportional to 269,555.60, 403,620.60 and 215,998.40

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Solution

The fourth proportional to 269,555.60, 403,620.60 and 215,998.40 is: 323,426.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,555.60 : 403,620.60 = 215,998.40 : x
  2. Step 2: Convert to fraction form
    269,555.60/403,620.60 = 215,998.40/x
  3. Step 3: Cross multiply
    269,555.60x = 403,620.60 × 215,998.40
  4. Step 4: Simplify right side
    269,555.60x = 87,181,403,807.04
  5. Step 5: Solve for x
    x = 87,181,403,807.04/269,555.60
  6. Step 6: Final answer
    x = 323,426.42

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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.