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Finding the Fourth Proportional to 309,810.71, 427,504.07 and 173,816.37

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Solution

The fourth proportional to 309,810.71, 427,504.07 and 173,816.37 is: 239,847.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,810.71 : 427,504.07 = 173,816.37 : x
  2. Step 2: Convert to fraction form
    309,810.71/427,504.07 = 173,816.37/x
  3. Step 3: Cross multiply
    309,810.71x = 427,504.07 × 173,816.37
  4. Step 4: Simplify right side
    309,810.71x = 74,307,204,738.54
  5. Step 5: Solve for x
    x = 74,307,204,738.54/309,810.71
  6. Step 6: Final answer
    x = 239,847.12

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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.