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Finding the Fourth Proportional to 307,981.80, 425,014.02 and 173,845.80

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Solution

The fourth proportional to 307,981.80, 425,014.02 and 173,845.80 is: 239,906.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,981.80 : 425,014.02 = 173,845.80 : x
  2. Step 2: Convert to fraction form
    307,981.80/425,014.02 = 173,845.80/x
  3. Step 3: Cross multiply
    307,981.80x = 425,014.02 × 173,845.80
  4. Step 4: Simplify right side
    307,981.80x = 73,886,902,318.12
  5. Step 5: Solve for x
    x = 73,886,902,318.12/307,981.80
  6. Step 6: Final answer
    x = 239,906.72

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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.