Home / 386,493.20-579,739.80-293,181.20

Finding the Fourth Proportional to 386,493.20, 579,739.80 and 293,181.20

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Solution

The fourth proportional to 386,493.20, 579,739.80 and 293,181.20 is: 439,771.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,493.20 : 579,739.80 = 293,181.20 : x
  2. Step 2: Convert to fraction form
    386,493.20/579,739.80 = 293,181.20/x
  3. Step 3: Cross multiply
    386,493.20x = 579,739.80 × 293,181.20
  4. Step 4: Simplify right side
    386,493.20x = 169,968,810,251.76
  5. Step 5: Solve for x
    x = 169,968,810,251.76/386,493.20
  6. Step 6: Final answer
    x = 439,771.80

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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.