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Finding the Fourth Proportional to 485,368.89, 728,381.39 and 169,828.53

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Solution

The fourth proportional to 485,368.89, 728,381.39 and 169,828.53 is: 254,857.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,368.89 : 728,381.39 = 169,828.53 : x
  2. Step 2: Convert to fraction form
    485,368.89/728,381.39 = 169,828.53/x
  3. Step 3: Cross multiply
    485,368.89x = 728,381.39 × 169,828.53
  4. Step 4: Simplify right side
    485,368.89x = 123,699,939,893.91
  5. Step 5: Solve for x
    x = 123,699,939,893.91/485,368.89
  6. Step 6: Final answer
    x = 254,857.58

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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.