Home / 485,986.58-729,031.79-205,532.18

Finding the Fourth Proportional to 485,986.58, 729,031.79 and 205,532.18

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Solution

The fourth proportional to 485,986.58, 729,031.79 and 205,532.18 is: 308,320.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,986.58 : 729,031.79 = 205,532.18 : x
  2. Step 2: Convert to fraction form
    485,986.58/729,031.79 = 205,532.18/x
  3. Step 3: Cross multiply
    485,986.58x = 729,031.79 × 205,532.18
  4. Step 4: Simplify right side
    485,986.58x = 149,839,493,088.00
  5. Step 5: Solve for x
    x = 149,839,493,088.00/485,986.58
  6. Step 6: Final answer
    x = 308,320.23

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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.