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Finding the Fourth Proportional to 199,410.57, 299,051.15 and 66,255.08

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Solution

The fourth proportional to 199,410.57, 299,051.15 and 66,255.08 is: 99,361.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,410.57 : 299,051.15 = 66,255.08 : x
  2. Step 2: Convert to fraction form
    199,410.57/299,051.15 = 66,255.08/x
  3. Step 3: Cross multiply
    199,410.57x = 299,051.15 × 66,255.08
  4. Step 4: Simplify right side
    199,410.57x = 19,813,656,040.81
  5. Step 5: Solve for x
    x = 19,813,656,040.81/199,410.57
  6. Step 6: Final answer
    x = 99,361.11

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Why These Related Problems?

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