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Finding the Fourth Proportional to 613,271.25, 919,309.20 and 293,339.58

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Solution

The fourth proportional to 613,271.25, 919,309.20 and 293,339.58 is: 439,723.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,271.25 : 919,309.20 = 293,339.58 : x
  2. Step 2: Convert to fraction form
    613,271.25/919,309.20 = 293,339.58/x
  3. Step 3: Cross multiply
    613,271.25x = 919,309.20 × 293,339.58
  4. Step 4: Simplify right side
    613,271.25x = 269,669,770,070.70
  5. Step 5: Solve for x
    x = 269,669,770,070.70/613,271.25
  6. Step 6: Final answer
    x = 439,723.48

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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.