Home / 665,057.20-997,731.60-215,701.60

Finding the Fourth Proportional to 665,057.20, 997,731.60 and 215,701.60

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Solution

The fourth proportional to 665,057.20, 997,731.60 and 215,701.60 is: 323,599.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,057.20 : 997,731.60 = 215,701.60 : x
  2. Step 2: Convert to fraction form
    665,057.20/997,731.60 = 215,701.60/x
  3. Step 3: Cross multiply
    665,057.20x = 997,731.60 × 215,701.60
  4. Step 4: Simplify right side
    665,057.20x = 215,212,302,490.56
  5. Step 5: Solve for x
    x = 215,212,302,490.56/665,057.20
  6. Step 6: Final answer
    x = 323,599.69

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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.