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Finding the Fourth Proportional to 418,008.60, 576,845.55 and 227,020.32

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Solution

The fourth proportional to 418,008.60, 576,845.55 and 227,020.32 is: 313,284.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,008.60 : 576,845.55 = 227,020.32 : x
  2. Step 2: Convert to fraction form
    418,008.60/576,845.55 = 227,020.32/x
  3. Step 3: Cross multiply
    418,008.60x = 576,845.55 × 227,020.32
  4. Step 4: Simplify right side
    418,008.60x = 130,955,661,351.58
  5. Step 5: Solve for x
    x = 130,955,661,351.58/418,008.60
  6. Step 6: Final answer
    x = 313,284.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.