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Finding the Fourth Proportional to 397,169.56, 595,419.72 and 172,360.72

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Solution

The fourth proportional to 397,169.56, 595,419.72 and 172,360.72 is: 258,395.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,169.56 : 595,419.72 = 172,360.72 : x
  2. Step 2: Convert to fraction form
    397,169.56/595,419.72 = 172,360.72/x
  3. Step 3: Cross multiply
    397,169.56x = 595,419.72 × 172,360.72
  4. Step 4: Simplify right side
    397,169.56x = 102,626,971,641.40
  5. Step 5: Solve for x
    x = 102,626,971,641.40/397,169.56
  6. Step 6: Final answer
    x = 258,395.86

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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.