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Finding the Fourth Proportional to 225,798.12, 311,601.06 and 130,304.79

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Solution

The fourth proportional to 225,798.12, 311,601.06 and 130,304.79 is: 179,820.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,798.12 : 311,601.06 = 130,304.79 : x
  2. Step 2: Convert to fraction form
    225,798.12/311,601.06 = 130,304.79/x
  3. Step 3: Cross multiply
    225,798.12x = 311,601.06 × 130,304.79
  4. Step 4: Simplify right side
    225,798.12x = 40,603,110,687.08
  5. Step 5: Solve for x
    x = 40,603,110,687.08/225,798.12
  6. Step 6: Final answer
    x = 179,820.41

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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.