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Finding the Fourth Proportional to 550,462.86, 759,629.61 and 321,153.48

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Solution

The fourth proportional to 550,462.86, 759,629.61 and 321,153.48 is: 443,186.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,462.86 : 759,629.61 = 321,153.48 : x
  2. Step 2: Convert to fraction form
    550,462.86/759,629.61 = 321,153.48/x
  3. Step 3: Cross multiply
    550,462.86x = 759,629.61 × 321,153.48
  4. Step 4: Simplify right side
    550,462.86x = 243,957,692,762.54
  5. Step 5: Solve for x
    x = 243,957,692,762.54/550,462.86
  6. Step 6: Final answer
    x = 443,186.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.