Home / 257,003.57-385,458.91-69,971.33

Finding the Fourth Proportional to 257,003.57, 385,458.91 and 69,971.33

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Solution

The fourth proportional to 257,003.57, 385,458.91 and 69,971.33 is: 104,944.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,003.57 : 385,458.91 = 69,971.33 : x
  2. Step 2: Convert to fraction form
    257,003.57/385,458.91 = 69,971.33/x
  3. Step 3: Cross multiply
    257,003.57x = 385,458.91 × 69,971.33
  4. Step 4: Simplify right side
    257,003.57x = 26,971,072,593.05
  5. Step 5: Solve for x
    x = 26,971,072,593.05/257,003.57
  6. Step 6: Final answer
    x = 104,944.35

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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.