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Finding the Fourth Proportional to 397,298.80, 595,948.20 and 172,912.60

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Solution

The fourth proportional to 397,298.80, 595,948.20 and 172,912.60 is: 259,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,298.80 : 595,948.20 = 172,912.60 : x
  2. Step 2: Convert to fraction form
    397,298.80/595,948.20 = 172,912.60/x
  3. Step 3: Cross multiply
    397,298.80x = 595,948.20 × 172,912.60
  4. Step 4: Simplify right side
    397,298.80x = 103,046,952,727.32
  5. Step 5: Solve for x
    x = 103,046,952,727.32/397,298.80
  6. Step 6: Final answer
    x = 259,368.90

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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.