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Finding the Fourth Proportional to 222,980, 307,712.88 and 122,377.76

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Solution

The fourth proportional to 222,980, 307,712.88 and 122,377.76 is: 168,881.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,980 : 307,712.88 = 122,377.76 : x
  2. Step 2: Convert to fraction form
    222,980/307,712.88 = 122,377.76/x
  3. Step 3: Cross multiply
    222,980x = 307,712.88 × 122,377.76
  4. Step 4: Simplify right side
    222,980x = 37,657,212,977.55
  5. Step 5: Solve for x
    x = 37,657,212,977.55/222,980
  6. Step 6: Final answer
    x = 168,881.57

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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.