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Finding the Fourth Proportional to 638,615, 957,922.50 and 259,741.87

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Solution

The fourth proportional to 638,615, 957,922.50 and 259,741.87 is: 389,612.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,615 : 957,922.50 = 259,741.87 : x
  2. Step 2: Convert to fraction form
    638,615/957,922.50 = 259,741.87/x
  3. Step 3: Cross multiply
    638,615x = 957,922.50 × 259,741.87
  4. Step 4: Simplify right side
    638,615x = 248,812,581,465.08
  5. Step 5: Solve for x
    x = 248,812,581,465.08/638,615
  6. Step 6: Final answer
    x = 389,612.81

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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.