Home / 485,988.58-729,034.80-205,534.18

Finding the Fourth Proportional to 485,988.58, 729,034.80 and 205,534.18

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Solution

The fourth proportional to 485,988.58, 729,034.80 and 205,534.18 is: 308,323.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,988.58 : 729,034.80 = 205,534.18 : x
  2. Step 2: Convert to fraction form
    485,988.58/729,034.80 = 205,534.18/x
  3. Step 3: Cross multiply
    485,988.58x = 729,034.80 × 205,534.18
  4. Step 4: Simplify right side
    485,988.58x = 149,841,569,809.46
  5. Step 5: Solve for x
    x = 149,841,569,809.46/485,988.58
  6. Step 6: Final answer
    x = 308,323.23

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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.