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Finding the Fourth Proportional to 507,361.38, 700,163.85 and 306,118.50

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Solution

The fourth proportional to 507,361.38, 700,163.85 and 306,118.50 is: 422,446.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,361.38 : 700,163.85 = 306,118.50 : x
  2. Step 2: Convert to fraction form
    507,361.38/700,163.85 = 306,118.50/x
  3. Step 3: Cross multiply
    507,361.38x = 700,163.85 × 306,118.50
  4. Step 4: Simplify right side
    507,361.38x = 214,333,107,516.23
  5. Step 5: Solve for x
    x = 214,333,107,516.23/507,361.38
  6. Step 6: Final answer
    x = 422,446.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.