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Finding the Fourth Proportional to 520,150.68, 780,451.38 and 183,431.91

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Solution

The fourth proportional to 520,150.68, 780,451.38 and 183,431.91 is: 275,227.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,150.68 : 780,451.38 = 183,431.91 : x
  2. Step 2: Convert to fraction form
    520,150.68/780,451.38 = 183,431.91/x
  3. Step 3: Cross multiply
    520,150.68x = 780,451.38 × 183,431.91
  4. Step 4: Simplify right side
    520,150.68x = 143,159,687,295.54
  5. Step 5: Solve for x
    x = 143,159,687,295.54/520,150.68
  6. Step 6: Final answer
    x = 275,227.34

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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.