Home / 220,128,355.80-330,192,533.70-90,669,328.20

Finding the Fourth Proportional to 220,128,355.80, 330,192,533.70 and 90,669,328.20

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Solution

The fourth proportional to 220,128,355.80, 330,192,533.70 and 90,669,328.20 is: 136,003,992.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,128,355.80 : 330,192,533.70 = 90,669,328.20 : x
  2. Step 2: Convert to fraction form
    220,128,355.80/330,192,533.70 = 90,669,328.20/x
  3. Step 3: Cross multiply
    220,128,355.80x = 330,192,533.70 × 90,669,328.20
  4. Step 4: Simplify right side
    220,128,355.80x = 29,938,335,207,234,860
  5. Step 5: Solve for x
    x = 29,938,335,207,234,860/220,128,355.80
  6. Step 6: Final answer
    x = 136,003,992.30

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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.