Home / 485,936.58-728,899.61-166,085.40

Finding the Fourth Proportional to 485,936.58, 728,899.61 and 166,085.40

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Solution

The fourth proportional to 485,936.58, 728,899.61 and 166,085.40 is: 249,126.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,936.58 : 728,899.61 = 166,085.40 : x
  2. Step 2: Convert to fraction form
    485,936.58/728,899.61 = 166,085.40/x
  3. Step 3: Cross multiply
    485,936.58x = 728,899.61 × 166,085.40
  4. Step 4: Simplify right side
    485,936.58x = 121,059,582,456.27
  5. Step 5: Solve for x
    x = 121,059,582,456.27/485,936.58
  6. Step 6: Final answer
    x = 249,126.30

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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.