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Finding the Fourth Proportional to 491,174.66, 736,762.16 and 220,987.20

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Solution

The fourth proportional to 491,174.66, 736,762.16 and 220,987.20 is: 331,480.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,174.66 : 736,762.16 = 220,987.20 : x
  2. Step 2: Convert to fraction form
    491,174.66/736,762.16 = 220,987.20/x
  3. Step 3: Cross multiply
    491,174.66x = 736,762.16 × 220,987.20
  4. Step 4: Simplify right side
    491,174.66x = 162,815,006,804.35
  5. Step 5: Solve for x
    x = 162,815,006,804.35/491,174.66
  6. Step 6: Final answer
    x = 331,480.88

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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.