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Finding the Fourth Proportional to 227,054.80, 340,121.40 and 128,443.60

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Solution

The fourth proportional to 227,054.80, 340,121.40 and 128,443.60 is: 192,404.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,054.80 : 340,121.40 = 128,443.60 : x
  2. Step 2: Convert to fraction form
    227,054.80/340,121.40 = 128,443.60/x
  3. Step 3: Cross multiply
    227,054.80x = 340,121.40 × 128,443.60
  4. Step 4: Simplify right side
    227,054.80x = 43,686,417,053.04
  5. Step 5: Solve for x
    x = 43,686,417,053.04/227,054.80
  6. Step 6: Final answer
    x = 192,404.73

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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.