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Finding the Fourth Proportional to 220,420.60, 330,630.90 and 164,433.40

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Solution

The fourth proportional to 220,420.60, 330,630.90 and 164,433.40 is: 246,650.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,420.60 : 330,630.90 = 164,433.40 : x
  2. Step 2: Convert to fraction form
    220,420.60/330,630.90 = 164,433.40/x
  3. Step 3: Cross multiply
    220,420.60x = 330,630.90 × 164,433.40
  4. Step 4: Simplify right side
    220,420.60x = 54,366,763,032.06
  5. Step 5: Solve for x
    x = 54,366,763,032.06/220,420.60
  6. Step 6: Final answer
    x = 246,650.10

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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.