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Finding the Fourth Proportional to 665,330.96, 997,997.88 and 166,696.40

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Solution

The fourth proportional to 665,330.96, 997,997.88 and 166,696.40 is: 250,044.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,330.96 : 997,997.88 = 166,696.40 : x
  2. Step 2: Convert to fraction form
    665,330.96/997,997.88 = 166,696.40/x
  3. Step 3: Cross multiply
    665,330.96x = 997,997.88 × 166,696.40
  4. Step 4: Simplify right side
    665,330.96x = 166,362,653,803.63
  5. Step 5: Solve for x
    x = 166,362,653,803.63/665,330.96
  6. Step 6: Final answer
    x = 250,044.96

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Double scale
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Similar ratio
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1.5x scale

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.