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Finding the Fourth Proportional to 375,699.35, 518,486.31 and 222,828.05

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Solution

The fourth proportional to 375,699.35, 518,486.31 and 222,828.05 is: 307,515.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,699.35 : 518,486.31 = 222,828.05 : x
  2. Step 2: Convert to fraction form
    375,699.35/518,486.31 = 222,828.05/x
  3. Step 3: Cross multiply
    375,699.35x = 518,486.31 × 222,828.05
  4. Step 4: Simplify right side
    375,699.35x = 115,533,290,816.56
  5. Step 5: Solve for x
    x = 115,533,290,816.56/375,699.35
  6. Step 6: Final answer
    x = 307,515.28

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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.