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Finding the Fourth Proportional to 254,638.88, 351,269.84 and 172,971.32

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Solution

The fourth proportional to 254,638.88, 351,269.84 and 172,971.32 is: 238,610.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,638.88 : 351,269.84 = 172,971.32 : x
  2. Step 2: Convert to fraction form
    254,638.88/351,269.84 = 172,971.32/x
  3. Step 3: Cross multiply
    254,638.88x = 351,269.84 × 172,971.32
  4. Step 4: Simplify right side
    254,638.88x = 60,759,607,900.99
  5. Step 5: Solve for x
    x = 60,759,607,900.99/254,638.88
  6. Step 6: Final answer
    x = 238,610.88

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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.