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Finding the Fourth Proportional to 664,055.70, 996,083.55 and 165,419.70

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Solution

The fourth proportional to 664,055.70, 996,083.55 and 165,419.70 is: 248,129.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,055.70 : 996,083.55 = 165,419.70 : x
  2. Step 2: Convert to fraction form
    664,055.70/996,083.55 = 165,419.70/x
  3. Step 3: Cross multiply
    664,055.70x = 996,083.55 × 165,419.70
  4. Step 4: Simplify right side
    664,055.70x = 164,771,842,015.94
  5. Step 5: Solve for x
    x = 164,771,842,015.94/664,055.70
  6. Step 6: Final answer
    x = 248,129.55

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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.