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Finding the Fourth Proportional to 516,958.96, 775,438.72 and 162,000.76

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Solution

The fourth proportional to 516,958.96, 775,438.72 and 162,000.76 is: 243,001.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,958.96 : 775,438.72 = 162,000.76 : x
  2. Step 2: Convert to fraction form
    516,958.96/775,438.72 = 162,000.76/x
  3. Step 3: Cross multiply
    516,958.96x = 775,438.72 × 162,000.76
  4. Step 4: Simplify right side
    516,958.96x = 125,621,661,973.43
  5. Step 5: Solve for x
    x = 125,621,661,973.43/516,958.96
  6. Step 6: Final answer
    x = 243,001.23

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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.