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Finding the Fourth Proportional to 664,007.40, 996,011.10 and 165,371.40

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Solution

The fourth proportional to 664,007.40, 996,011.10 and 165,371.40 is: 248,057.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,007.40 : 996,011.10 = 165,371.40 : x
  2. Step 2: Convert to fraction form
    664,007.40/996,011.10 = 165,371.40/x
  3. Step 3: Cross multiply
    664,007.40x = 996,011.10 × 165,371.40
  4. Step 4: Simplify right side
    664,007.40x = 164,711,750,022.54
  5. Step 5: Solve for x
    x = 164,711,750,022.54/664,007.40
  6. Step 6: Final answer
    x = 248,057.10

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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.