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Finding the Fourth Proportional to 172,391.40, 258,003.90 and 151,396.20

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Solution

The fourth proportional to 172,391.40, 258,003.90 and 151,396.20 is: 226,582.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,391.40 : 258,003.90 = 151,396.20 : x
  2. Step 2: Convert to fraction form
    172,391.40/258,003.90 = 151,396.20/x
  3. Step 3: Cross multiply
    172,391.40x = 258,003.90 × 151,396.20
  4. Step 4: Simplify right side
    172,391.40x = 39,060,810,045.18
  5. Step 5: Solve for x
    x = 39,060,810,045.18/172,391.40
  6. Step 6: Final answer
    x = 226,582.13

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1.5x scale

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.