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Finding the Fourth Proportional to 219,880.56, 329,886.48 and 155,961.84

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Solution

The fourth proportional to 219,880.56, 329,886.48 and 155,961.84 is: 233,989.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,880.56 : 329,886.48 = 155,961.84 : x
  2. Step 2: Convert to fraction form
    219,880.56/329,886.48 = 155,961.84/x
  3. Step 3: Cross multiply
    219,880.56x = 329,886.48 × 155,961.84
  4. Step 4: Simplify right side
    219,880.56x = 51,449,702,411.92
  5. Step 5: Solve for x
    x = 51,449,702,411.92/219,880.56
  6. Step 6: Final answer
    x = 233,989.32

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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.