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Finding the Fourth Proportional to 386,166.60, 579,249.90 and 320,848.20

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Solution

The fourth proportional to 386,166.60, 579,249.90 and 320,848.20 is: 481,272.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,166.60 : 579,249.90 = 320,848.20 : x
  2. Step 2: Convert to fraction form
    386,166.60/579,249.90 = 320,848.20/x
  3. Step 3: Cross multiply
    386,166.60x = 579,249.90 × 320,848.20
  4. Step 4: Simplify right side
    386,166.60x = 185,851,287,765.18
  5. Step 5: Solve for x
    x = 185,851,287,765.18/386,166.60
  6. Step 6: Final answer
    x = 481,272.30

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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.