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Finding the Fourth Proportional to 527,703.48, 791,629.20 and 172,745.64

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Solution

The fourth proportional to 527,703.48, 791,629.20 and 172,745.64 is: 259,142.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,703.48 : 791,629.20 = 172,745.64 : x
  2. Step 2: Convert to fraction form
    527,703.48/791,629.20 = 172,745.64/x
  3. Step 3: Cross multiply
    527,703.48x = 791,629.20 × 172,745.64
  4. Step 4: Simplify right side
    527,703.48x = 136,750,492,796.69
  5. Step 5: Solve for x
    x = 136,750,492,796.69/527,703.48
  6. Step 6: Final answer
    x = 259,142.68

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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.