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Finding the Fourth Proportional to 309,629.88, 427,247.88 and 171,806.52

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Solution

The fourth proportional to 309,629.88, 427,247.88 and 171,806.52 is: 237,070.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,629.88 : 427,247.88 = 171,806.52 : x
  2. Step 2: Convert to fraction form
    309,629.88/427,247.88 = 171,806.52/x
  3. Step 3: Cross multiply
    309,629.88x = 427,247.88 × 171,806.52
  4. Step 4: Simplify right side
    309,629.88x = 73,403,971,440.18
  5. Step 5: Solve for x
    x = 73,403,971,440.18/309,629.88
  6. Step 6: Final answer
    x = 237,070.05

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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.