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Finding the Fourth Proportional to 375,678.91, 518,360.25 and 222,649.75

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Solution

The fourth proportional to 375,678.91, 518,360.25 and 222,649.75 is: 307,211.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,678.91 : 518,360.25 = 222,649.75 : x
  2. Step 2: Convert to fraction form
    375,678.91/518,360.25 = 222,649.75/x
  3. Step 3: Cross multiply
    375,678.91x = 518,360.25 × 222,649.75
  4. Step 4: Simplify right side
    375,678.91x = 115,412,780,072.44
  5. Step 5: Solve for x
    x = 115,412,780,072.44/375,678.91
  6. Step 6: Final answer
    x = 307,211.23

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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.