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Finding the Fourth Proportional to 212,880.75, 319,228.41 and 61,044.28

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Solution

The fourth proportional to 212,880.75, 319,228.41 and 61,044.28 is: 91,539.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,880.75 : 319,228.41 = 61,044.28 : x
  2. Step 2: Convert to fraction form
    212,880.75/319,228.41 = 61,044.28/x
  3. Step 3: Cross multiply
    212,880.75x = 319,228.41 × 61,044.28
  4. Step 4: Simplify right side
    212,880.75x = 19,487,066,542.63
  5. Step 5: Solve for x
    x = 19,487,066,542.63/212,880.75
  6. Step 6: Final answer
    x = 91,539.82

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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.