Home / 386,905.20-580,677.60-197,505.48

Finding the Fourth Proportional to 386,905.20, 580,677.60 and 197,505.48

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Solution

The fourth proportional to 386,905.20, 580,677.60 and 197,505.48 is: 296,421.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,905.20 : 580,677.60 = 197,505.48 : x
  2. Step 2: Convert to fraction form
    386,905.20/580,677.60 = 197,505.48/x
  3. Step 3: Cross multiply
    386,905.20x = 580,677.60 × 197,505.48
  4. Step 4: Simplify right side
    386,905.20x = 114,687,008,113.25
  5. Step 5: Solve for x
    x = 114,687,008,113.25/386,905.20
  6. Step 6: Final answer
    x = 296,421.47

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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.