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Finding the Fourth Proportional to 259,328.49, 388,899.21 and 109,580.38

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Solution

The fourth proportional to 259,328.49, 388,899.21 and 109,580.38 is: 164,331.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,328.49 : 388,899.21 = 109,580.38 : x
  2. Step 2: Convert to fraction form
    259,328.49/388,899.21 = 109,580.38/x
  3. Step 3: Cross multiply
    259,328.49x = 388,899.21 × 109,580.38
  4. Step 4: Simplify right side
    259,328.49x = 42,615,723,213.50
  5. Step 5: Solve for x
    x = 42,615,723,213.50/259,328.49
  6. Step 6: Final answer
    x = 164,331.05

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.