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Finding the Fourth Proportional to 220,065,330.30, 330,097,995.45 and 118,028,658.30

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Solution

The fourth proportional to 220,065,330.30, 330,097,995.45 and 118,028,658.30 is: 177,042,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,065,330.30 : 330,097,995.45 = 118,028,658.30 : x
  2. Step 2: Convert to fraction form
    220,065,330.30/330,097,995.45 = 118,028,658.30/x
  3. Step 3: Cross multiply
    220,065,330.30x = 330,097,995.45 × 118,028,658.30
  4. Step 4: Simplify right side
    220,065,330.30x = 38,961,023,510,483,000
  5. Step 5: Solve for x
    x = 38,961,023,510,483,000/220,065,330.30
  6. Step 6: Final answer
    x = 177,042,987.45

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Similar ratio
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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.