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Finding the Fourth Proportional to 222,516, 307,072.08 and 121,916.32

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Solution

The fourth proportional to 222,516, 307,072.08 and 121,916.32 is: 168,244.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,516 : 307,072.08 = 121,916.32 : x
  2. Step 2: Convert to fraction form
    222,516/307,072.08 = 121,916.32/x
  3. Step 3: Cross multiply
    222,516x = 307,072.08 × 121,916.32
  4. Step 4: Simplify right side
    222,516x = 37,437,097,968.35
  5. Step 5: Solve for x
    x = 37,437,097,968.35/222,516
  6. Step 6: Final answer
    x = 168,244.52

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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.