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Finding the Fourth Proportional to 220,508.58, 330,500.40 and 126,817.50

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Solution

The fourth proportional to 220,508.58, 330,500.40 and 126,817.50 is: 190,075.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,508.58 : 330,500.40 = 126,817.50 : x
  2. Step 2: Convert to fraction form
    220,508.58/330,500.40 = 126,817.50/x
  3. Step 3: Cross multiply
    220,508.58x = 330,500.40 × 126,817.50
  4. Step 4: Simplify right side
    220,508.58x = 41,913,234,477
  5. Step 5: Solve for x
    x = 41,913,234,477/220,508.58
  6. Step 6: Final answer
    x = 190,075.30

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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.