Home / 343,933.20-515,899.80-91,213.20

Finding the Fourth Proportional to 343,933.20, 515,899.80 and 91,213.20

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Solution

The fourth proportional to 343,933.20, 515,899.80 and 91,213.20 is: 136,819.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,933.20 : 515,899.80 = 91,213.20 : x
  2. Step 2: Convert to fraction form
    343,933.20/515,899.80 = 91,213.20/x
  3. Step 3: Cross multiply
    343,933.20x = 515,899.80 × 91,213.20
  4. Step 4: Simplify right side
    343,933.20x = 47,056,871,637.36
  5. Step 5: Solve for x
    x = 47,056,871,637.36/343,933.20
  6. Step 6: Final answer
    x = 136,819.80

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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.