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Finding the Fourth Proportional to 254,220.80, 381,331.20 and 64,680.80

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Solution

The fourth proportional to 254,220.80, 381,331.20 and 64,680.80 is: 97,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,220.80 : 381,331.20 = 64,680.80 : x
  2. Step 2: Convert to fraction form
    254,220.80/381,331.20 = 64,680.80/x
  3. Step 3: Cross multiply
    254,220.80x = 381,331.20 × 64,680.80
  4. Step 4: Simplify right side
    254,220.80x = 24,664,807,080.96
  5. Step 5: Solve for x
    x = 24,664,807,080.96/254,220.80
  6. Step 6: Final answer
    x = 97,021.20

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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.