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Finding the Fourth Proportional to 172,422.90, 258,051.15 and 151,427.70

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Solution

The fourth proportional to 172,422.90, 258,051.15 and 151,427.70 is: 226,629.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,422.90 : 258,051.15 = 151,427.70 : x
  2. Step 2: Convert to fraction form
    172,422.90/258,051.15 = 151,427.70/x
  3. Step 3: Cross multiply
    172,422.90x = 258,051.15 × 151,427.70
  4. Step 4: Simplify right side
    172,422.90x = 39,076,092,126.86
  5. Step 5: Solve for x
    x = 39,076,092,126.86/172,422.90
  6. Step 6: Final answer
    x = 226,629.36

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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.