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Finding the Fourth Proportional to 330,013.75, 495,228.86 and 140,473.81

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Solution

The fourth proportional to 330,013.75, 495,228.86 and 140,473.81 is: 210,799.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,013.75 : 495,228.86 = 140,473.81 : x
  2. Step 2: Convert to fraction form
    330,013.75/495,228.86 = 140,473.81/x
  3. Step 3: Cross multiply
    330,013.75x = 495,228.86 × 140,473.81
  4. Step 4: Simplify right side
    330,013.75x = 69,566,684,083.79
  5. Step 5: Solve for x
    x = 69,566,684,083.79/330,013.75
  6. Step 6: Final answer
    x = 210,799.35

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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.