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Finding the Fourth Proportional to 331,291.60, 497,455.80 and 191,323.60

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Solution

The fourth proportional to 331,291.60, 497,455.80 and 191,323.60 is: 287,284.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,291.60 : 497,455.80 = 191,323.60 : x
  2. Step 2: Convert to fraction form
    331,291.60/497,455.80 = 191,323.60/x
  3. Step 3: Cross multiply
    331,291.60x = 497,455.80 × 191,323.60
  4. Step 4: Simplify right side
    331,291.60x = 95,175,034,496.88
  5. Step 5: Solve for x
    x = 95,175,034,496.88/331,291.60
  6. Step 6: Final answer
    x = 287,284.78

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1.5x scale

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.