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Finding the Fourth Proportional to 330,247.80, 495,371.70 and 119,858.40

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Solution

The fourth proportional to 330,247.80, 495,371.70 and 119,858.40 is: 179,787.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,247.80 : 495,371.70 = 119,858.40 : x
  2. Step 2: Convert to fraction form
    330,247.80/495,371.70 = 119,858.40/x
  3. Step 3: Cross multiply
    330,247.80x = 495,371.70 × 119,858.40
  4. Step 4: Simplify right side
    330,247.80x = 59,374,459,367.28
  5. Step 5: Solve for x
    x = 59,374,459,367.28/330,247.80
  6. Step 6: Final answer
    x = 179,787.60

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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.