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Finding the Fourth Proportional to 478,121.94, 717,015.60 and 141,073.11

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Solution

The fourth proportional to 478,121.94, 717,015.60 and 141,073.11 is: 211,560.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,121.94 : 717,015.60 = 141,073.11 : x
  2. Step 2: Convert to fraction form
    478,121.94/717,015.60 = 141,073.11/x
  3. Step 3: Cross multiply
    478,121.94x = 717,015.60 × 141,073.11
  4. Step 4: Simplify right side
    478,121.94x = 101,151,620,610.52
  5. Step 5: Solve for x
    x = 101,151,620,610.52/478,121.94
  6. Step 6: Final answer
    x = 211,560.30

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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.