Home / 385,175.86-531,615.66-258,072.28

Finding the Fourth Proportional to 385,175.86, 531,615.66 and 258,072.28

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Solution

The fourth proportional to 385,175.86, 531,615.66 and 258,072.28 is: 356,188.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,175.86 : 531,615.66 = 258,072.28 : x
  2. Step 2: Convert to fraction form
    385,175.86/531,615.66 = 258,072.28/x
  3. Step 3: Cross multiply
    385,175.86x = 531,615.66 × 258,072.28
  4. Step 4: Simplify right side
    385,175.86x = 137,195,263,163.10
  5. Step 5: Solve for x
    x = 137,195,263,163.10/385,175.86
  6. Step 6: Final answer
    x = 356,188.64

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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.