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Finding the Fourth Proportional to 330,146.90, 495,220.35 and 80,828.90

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Solution

The fourth proportional to 330,146.90, 495,220.35 and 80,828.90 is: 121,243.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,146.90 : 495,220.35 = 80,828.90 : x
  2. Step 2: Convert to fraction form
    330,146.90/495,220.35 = 80,828.90/x
  3. Step 3: Cross multiply
    330,146.90x = 495,220.35 × 80,828.90
  4. Step 4: Simplify right side
    330,146.90x = 40,028,116,148.12
  5. Step 5: Solve for x
    x = 40,028,116,148.12/330,146.90
  6. Step 6: Final answer
    x = 121,243.35

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1.5x scale

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.