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Finding the Fourth Proportional to 307,989.80, 425,025.06 and 173,853.80

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Solution

The fourth proportional to 307,989.80, 425,025.06 and 173,853.80 is: 239,917.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,989.80 : 425,025.06 = 173,853.80 : x
  2. Step 2: Convert to fraction form
    307,989.80/425,025.06 = 173,853.80/x
  3. Step 3: Cross multiply
    307,989.80x = 425,025.06 × 173,853.80
  4. Step 4: Simplify right side
    307,989.80x = 73,892,221,776.23
  5. Step 5: Solve for x
    x = 73,892,221,776.23/307,989.80
  6. Step 6: Final answer
    x = 239,917.76

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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.