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Finding the Fourth Proportional to 545,495.05, 818,371.32 and 171,518.05

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Solution

The fourth proportional to 545,495.05, 818,371.32 and 171,518.05 is: 257,317.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,495.05 : 818,371.32 = 171,518.05 : x
  2. Step 2: Convert to fraction form
    545,495.05/818,371.32 = 171,518.05/x
  3. Step 3: Cross multiply
    545,495.05x = 818,371.32 × 171,518.05
  4. Step 4: Simplify right side
    545,495.05x = 140,365,452,982.33
  5. Step 5: Solve for x
    x = 140,365,452,982.33/545,495.05
  6. Step 6: Final answer
    x = 257,317.56

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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.