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Finding the Fourth Proportional to 652,090.60, 978,135.90 and 231,311.80

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Solution

The fourth proportional to 652,090.60, 978,135.90 and 231,311.80 is: 346,967.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,090.60 : 978,135.90 = 231,311.80 : x
  2. Step 2: Convert to fraction form
    652,090.60/978,135.90 = 231,311.80/x
  3. Step 3: Cross multiply
    652,090.60x = 978,135.90 × 231,311.80
  4. Step 4: Simplify right side
    652,090.60x = 226,254,375,673.62
  5. Step 5: Solve for x
    x = 226,254,375,673.62/652,090.60
  6. Step 6: Final answer
    x = 346,967.70

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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.