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Finding the Fourth Proportional to 397,079.70, 595,725.15 and 172,343.70

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Solution

The fourth proportional to 397,079.70, 595,725.15 and 172,343.70 is: 258,561.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,079.70 : 595,725.15 = 172,343.70 : x
  2. Step 2: Convert to fraction form
    397,079.70/595,725.15 = 172,343.70/x
  3. Step 3: Cross multiply
    397,079.70x = 595,725.15 × 172,343.70
  4. Step 4: Simplify right side
    397,079.70x = 102,669,476,534.06
  5. Step 5: Solve for x
    x = 102,669,476,534.06/397,079.70
  6. Step 6: Final answer
    x = 258,561.38

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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.