Home / 431,016.21-645,853.77-164,631.33

Finding the Fourth Proportional to 431,016.21, 645,853.77 and 164,631.33

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Solution

The fourth proportional to 431,016.21, 645,853.77 and 164,631.33 is: 246,690.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,016.21 : 645,853.77 = 164,631.33 : x
  2. Step 2: Convert to fraction form
    431,016.21/645,853.77 = 164,631.33/x
  3. Step 3: Cross multiply
    431,016.21x = 645,853.77 × 164,631.33
  4. Step 4: Simplify right side
    431,016.21x = 106,327,765,140.61
  5. Step 5: Solve for x
    x = 106,327,765,140.61/431,016.21
  6. Step 6: Final answer
    x = 246,690.87

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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.