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Finding the Fourth Proportional to 485,936.83, 728,899.98 and 166,085.65

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Solution

The fourth proportional to 485,936.83, 728,899.98 and 166,085.65 is: 249,126.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,936.83 : 728,899.98 = 166,085.65 : x
  2. Step 2: Convert to fraction form
    485,936.83/728,899.98 = 166,085.65/x
  3. Step 3: Cross multiply
    485,936.83x = 728,899.98 × 166,085.65
  4. Step 4: Simplify right side
    485,936.83x = 121,059,826,963.29
  5. Step 5: Solve for x
    x = 121,059,826,963.29/485,936.83
  6. Step 6: Final answer
    x = 249,126.68

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.