Home / 325,820.16-449,625.60-212,428.80

Finding the Fourth Proportional to 325,820.16, 449,625.60 and 212,428.80

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Solution

The fourth proportional to 325,820.16, 449,625.60 and 212,428.80 is: 293,147.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,820.16 : 449,625.60 = 212,428.80 : x
  2. Step 2: Convert to fraction form
    325,820.16/449,625.60 = 212,428.80/x
  3. Step 3: Cross multiply
    325,820.16x = 449,625.60 × 212,428.80
  4. Step 4: Simplify right side
    325,820.16x = 95,513,426,657.28
  5. Step 5: Solve for x
    x = 95,513,426,657.28/325,820.16
  6. Step 6: Final answer
    x = 293,147.69

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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.