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Finding the Fourth Proportional to 322,420.20, 483,630.30 and 125,428.20

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Solution

The fourth proportional to 322,420.20, 483,630.30 and 125,428.20 is: 188,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,420.20 : 483,630.30 = 125,428.20 : x
  2. Step 2: Convert to fraction form
    322,420.20/483,630.30 = 125,428.20/x
  3. Step 3: Cross multiply
    322,420.20x = 483,630.30 × 125,428.20
  4. Step 4: Simplify right side
    322,420.20x = 60,660,877,994.46
  5. Step 5: Solve for x
    x = 60,660,877,994.46/322,420.20
  6. Step 6: Final answer
    x = 188,142.30

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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.