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Finding the Fourth Proportional to 220,420.20, 330,630.30 and 54,208.20

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Solution

The fourth proportional to 220,420.20, 330,630.30 and 54,208.20 is: 81,312.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,420.20 : 330,630.30 = 54,208.20 : x
  2. Step 2: Convert to fraction form
    220,420.20/330,630.30 = 54,208.20/x
  3. Step 3: Cross multiply
    220,420.20x = 330,630.30 × 54,208.20
  4. Step 4: Simplify right side
    220,420.20x = 17,922,873,428.46
  5. Step 5: Solve for x
    x = 17,922,873,428.46/220,420.20
  6. Step 6: Final answer
    x = 81,312.30

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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.