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Finding the Fourth Proportional to 478,171.55, 659,876.64 and 263,311.08

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Solution

The fourth proportional to 478,171.55, 659,876.64 and 263,311.08 is: 363,369.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,171.55 : 659,876.64 = 263,311.08 : x
  2. Step 2: Convert to fraction form
    478,171.55/659,876.64 = 263,311.08/x
  3. Step 3: Cross multiply
    478,171.55x = 659,876.64 × 263,311.08
  4. Step 4: Simplify right side
    478,171.55x = 173,752,830,745.17
  5. Step 5: Solve for x
    x = 173,752,830,745.17/478,171.55
  6. Step 6: Final answer
    x = 363,369.24

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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.