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Finding the Fourth Proportional to 330,185.40, 495,278.10 and 80,867.40

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Solution

The fourth proportional to 330,185.40, 495,278.10 and 80,867.40 is: 121,301.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,185.40 : 495,278.10 = 80,867.40 : x
  2. Step 2: Convert to fraction form
    330,185.40/495,278.10 = 80,867.40/x
  3. Step 3: Cross multiply
    330,185.40x = 495,278.10 × 80,867.40
  4. Step 4: Simplify right side
    330,185.40x = 40,051,852,223.94
  5. Step 5: Solve for x
    x = 40,051,852,223.94/330,185.40
  6. Step 6: Final answer
    x = 121,301.10

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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.