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Finding the Fourth Proportional to 613,222.90, 919,764.28 and 163,978.80

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Solution

The fourth proportional to 613,222.90, 919,764.28 and 163,978.80 is: 245,949.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,222.90 : 919,764.28 = 163,978.80 : x
  2. Step 2: Convert to fraction form
    613,222.90/919,764.28 = 163,978.80/x
  3. Step 3: Cross multiply
    613,222.90x = 919,764.28 × 163,978.80
  4. Step 4: Simplify right side
    613,222.90x = 150,821,843,092.19
  5. Step 5: Solve for x
    x = 150,821,843,092.19/613,222.90
  6. Step 6: Final answer
    x = 245,949.46

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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.