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Finding the Fourth Proportional to 620,021.08, 930,042.42 and 170,739.64

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Solution

The fourth proportional to 620,021.08, 930,042.42 and 170,739.64 is: 256,112.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,021.08 : 930,042.42 = 170,739.64 : x
  2. Step 2: Convert to fraction form
    620,021.08/930,042.42 = 170,739.64/x
  3. Step 3: Cross multiply
    620,021.08x = 930,042.42 × 170,739.64
  4. Step 4: Simplify right side
    620,021.08x = 158,795,107,975.53
  5. Step 5: Solve for x
    x = 158,795,107,975.53/620,021.08
  6. Step 6: Final answer
    x = 256,112.43

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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.