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Finding the Fourth Proportional to 425,451.17, 638,365.21 and 222,999.16

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Solution

The fourth proportional to 425,451.17, 638,365.21 and 222,999.16 is: 334,597.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,451.17 : 638,365.21 = 222,999.16 : x
  2. Step 2: Convert to fraction form
    425,451.17/638,365.21 = 222,999.16/x
  3. Step 3: Cross multiply
    425,451.17x = 638,365.21 × 222,999.16
  4. Step 4: Simplify right side
    425,451.17x = 142,354,905,603.22
  5. Step 5: Solve for x
    x = 142,354,905,603.22/425,451.17
  6. Step 6: Final answer
    x = 334,597.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.