Home / 403,188.76-556,423.32-231,135.22

Finding the Fourth Proportional to 403,188.76, 556,423.32 and 231,135.22

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Solution

The fourth proportional to 403,188.76, 556,423.32 and 231,135.22 is: 318,979.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,188.76 : 556,423.32 = 231,135.22 : x
  2. Step 2: Convert to fraction form
    403,188.76/556,423.32 = 231,135.22/x
  3. Step 3: Cross multiply
    403,188.76x = 556,423.32 × 231,135.22
  4. Step 4: Simplify right side
    403,188.76x = 128,609,026,481.33
  5. Step 5: Solve for x
    x = 128,609,026,481.33/403,188.76
  6. Step 6: Final answer
    x = 318,979.69

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Double scale
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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.