Home / 328,171.32-492,340-91,514.02

Finding the Fourth Proportional to 328,171.32, 492,340 and 91,514.02

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Solution

The fourth proportional to 328,171.32, 492,340 and 91,514.02 is: 137,294.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,171.32 : 492,340 = 91,514.02 : x
  2. Step 2: Convert to fraction form
    328,171.32/492,340 = 91,514.02/x
  3. Step 3: Cross multiply
    328,171.32x = 492,340 × 91,514.02
  4. Step 4: Simplify right side
    328,171.32x = 45,056,012,606.80
  5. Step 5: Solve for x
    x = 45,056,012,606.80/328,171.32
  6. Step 6: Final answer
    x = 137,294.18

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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.