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Finding the Fourth Proportional to 665,101.80, 997,458.30 and 238,588.20

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Solution

The fourth proportional to 665,101.80, 997,458.30 and 238,588.20 is: 357,812.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,101.80 : 997,458.30 = 238,588.20 : x
  2. Step 2: Convert to fraction form
    665,101.80/997,458.30 = 238,588.20/x
  3. Step 3: Cross multiply
    665,101.80x = 997,458.30 × 238,588.20
  4. Step 4: Simplify right side
    665,101.80x = 237,981,780,372.06
  5. Step 5: Solve for x
    x = 237,981,780,372.06/665,101.80
  6. Step 6: Final answer
    x = 357,812.56

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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.