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Finding the Fourth Proportional to 485,477.01, 669,683.88 and 303,873.66

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Solution

The fourth proportional to 485,477.01, 669,683.88 and 303,873.66 is: 419,173.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,477.01 : 669,683.88 = 303,873.66 : x
  2. Step 2: Convert to fraction form
    485,477.01/669,683.88 = 303,873.66/x
  3. Step 3: Cross multiply
    485,477.01x = 669,683.88 × 303,873.66
  4. Step 4: Simplify right side
    485,477.01x = 203,499,291,658.60
  5. Step 5: Solve for x
    x = 203,499,291,658.60/485,477.01
  6. Step 6: Final answer
    x = 419,173.90

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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.