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Finding the Fourth Proportional to 220,065,400.80, 330,098,101.20 and 118,028,728.80

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Solution

The fourth proportional to 220,065,400.80, 330,098,101.20 and 118,028,728.80 is: 177,043,093.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,065,400.80 : 330,098,101.20 = 118,028,728.80 : x
  2. Step 2: Convert to fraction form
    220,065,400.80/330,098,101.20 = 118,028,728.80/x
  3. Step 3: Cross multiply
    220,065,400.80x = 330,098,101.20 × 118,028,728.80
  4. Step 4: Simplify right side
    220,065,400.80x = 38,961,059,263,929,752
  5. Step 5: Solve for x
    x = 38,961,059,263,929,752/220,065,400.80
  6. Step 6: Final answer
    x = 177,043,093.20

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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.