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Finding the Fourth Proportional to 665,011.37, 997,657.32 and 215,697.34

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Solution

The fourth proportional to 665,011.37, 997,657.32 and 215,697.34 is: 323,591.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,011.37 : 997,657.32 = 215,697.34 : x
  2. Step 2: Convert to fraction form
    665,011.37/997,657.32 = 215,697.34/x
  3. Step 3: Cross multiply
    665,011.37x = 997,657.32 × 215,697.34
  4. Step 4: Simplify right side
    665,011.37x = 215,192,030,155.53
  5. Step 5: Solve for x
    x = 215,192,030,155.53/665,011.37
  6. Step 6: Final answer
    x = 323,591.51

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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.