Home / 386,122.80-579,184.20-319,200.60

Finding the Fourth Proportional to 386,122.80, 579,184.20 and 319,200.60

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Solution

The fourth proportional to 386,122.80, 579,184.20 and 319,200.60 is: 478,800.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,122.80 : 579,184.20 = 319,200.60 : x
  2. Step 2: Convert to fraction form
    386,122.80/579,184.20 = 319,200.60/x
  3. Step 3: Cross multiply
    386,122.80x = 579,184.20 × 319,200.60
  4. Step 4: Simplify right side
    386,122.80x = 184,875,944,150.52
  5. Step 5: Solve for x
    x = 184,875,944,150.52/386,122.80
  6. Step 6: Final answer
    x = 478,800.90

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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.