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Finding the Fourth Proportional to 485,354, 728,174.64 and 248,862.62

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Solution

The fourth proportional to 485,354, 728,174.64 and 248,862.62 is: 373,367.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,354 : 728,174.64 = 248,862.62 : x
  2. Step 2: Convert to fraction form
    485,354/728,174.64 = 248,862.62/x
  3. Step 3: Cross multiply
    485,354x = 728,174.64 × 248,862.62
  4. Step 4: Simplify right side
    485,354x = 181,215,448,727.96
  5. Step 5: Solve for x
    x = 181,215,448,727.96/485,354
  6. Step 6: Final answer
    x = 373,367.58

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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.