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Finding the Fourth Proportional to 665,179.90, 997,769.85 and 166,543.90

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Solution

The fourth proportional to 665,179.90, 997,769.85 and 166,543.90 is: 249,815.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,179.90 : 997,769.85 = 166,543.90 : x
  2. Step 2: Convert to fraction form
    665,179.90/997,769.85 = 166,543.90/x
  3. Step 3: Cross multiply
    665,179.90x = 997,769.85 × 166,543.90
  4. Step 4: Simplify right side
    665,179.90x = 166,172,482,121.42
  5. Step 5: Solve for x
    x = 166,172,482,121.42/665,179.90
  6. Step 6: Final answer
    x = 249,815.85

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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.