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Finding the Fourth Proportional to 371,729.88, 557,875.24 and 172,190.28

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Solution

The fourth proportional to 371,729.88, 557,875.24 and 172,190.28 is: 258,415.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,729.88 : 557,875.24 = 172,190.28 : x
  2. Step 2: Convert to fraction form
    371,729.88/557,875.24 = 172,190.28/x
  3. Step 3: Cross multiply
    371,729.88x = 557,875.24 × 172,190.28
  4. Step 4: Simplify right side
    371,729.88x = 96,060,693,780.67
  5. Step 5: Solve for x
    x = 96,060,693,780.67/371,729.88
  6. Step 6: Final answer
    x = 258,415.31

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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.