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Finding the Fourth Proportional to 478,093.20, 717,140.28 and 123,108

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Solution

The fourth proportional to 478,093.20, 717,140.28 and 123,108 is: 184,662.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,093.20 : 717,140.28 = 123,108 : x
  2. Step 2: Convert to fraction form
    478,093.20/717,140.28 = 123,108/x
  3. Step 3: Cross multiply
    478,093.20x = 717,140.28 × 123,108
  4. Step 4: Simplify right side
    478,093.20x = 88,285,705,590.24
  5. Step 5: Solve for x
    x = 88,285,705,590.24/478,093.20
  6. Step 6: Final answer
    x = 184,662.12

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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.