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Finding the Fourth Proportional to 220,065,319.80, 330,097,979.70 and 118,028,647.80

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Solution

The fourth proportional to 220,065,319.80, 330,097,979.70 and 118,028,647.80 is: 177,042,971.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,065,319.80 : 330,097,979.70 = 118,028,647.80 : x
  2. Step 2: Convert to fraction form
    220,065,319.80/330,097,979.70 = 118,028,647.80/x
  3. Step 3: Cross multiply
    220,065,319.80x = 330,097,979.70 × 118,028,647.80
  4. Step 4: Simplify right side
    220,065,319.80x = 38,961,018,185,502,848
  5. Step 5: Solve for x
    x = 38,961,018,185,502,848/220,065,319.80
  6. Step 6: Final answer
    x = 177,042,971.70

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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.