Home / 403,135.14-556,349.46-231,081.72

Finding the Fourth Proportional to 403,135.14, 556,349.46 and 231,081.72

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Solution

The fourth proportional to 403,135.14, 556,349.46 and 231,081.72 is: 318,905.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,135.14 : 556,349.46 = 231,081.72 : x
  2. Step 2: Convert to fraction form
    403,135.14/556,349.46 = 231,081.72/x
  3. Step 3: Cross multiply
    403,135.14x = 556,349.46 × 231,081.72
  4. Step 4: Simplify right side
    403,135.14x = 128,562,190,137.87
  5. Step 5: Solve for x
    x = 128,562,190,137.87/403,135.14
  6. Step 6: Final answer
    x = 318,905.94

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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.