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Finding the Fourth Proportional to 307,982.80, 425,015.40 and 173,846.80

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Solution

The fourth proportional to 307,982.80, 425,015.40 and 173,846.80 is: 239,908.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,982.80 : 425,015.40 = 173,846.80 : x
  2. Step 2: Convert to fraction form
    307,982.80/425,015.40 = 173,846.80/x
  3. Step 3: Cross multiply
    307,982.80x = 425,015.40 × 173,846.80
  4. Step 4: Simplify right side
    307,982.80x = 73,887,567,240.72
  5. Step 5: Solve for x
    x = 73,887,567,240.72/307,982.80
  6. Step 6: Final answer
    x = 239,908.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.