Home / 259,181.27-388,505.30-99,219.53

Finding the Fourth Proportional to 259,181.27, 388,505.30 and 99,219.53

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Solution

The fourth proportional to 259,181.27, 388,505.30 and 99,219.53 is: 148,727.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,181.27 : 388,505.30 = 99,219.53 : x
  2. Step 2: Convert to fraction form
    259,181.27/388,505.30 = 99,219.53/x
  3. Step 3: Cross multiply
    259,181.27x = 388,505.30 × 99,219.53
  4. Step 4: Simplify right side
    259,181.27x = 38,547,311,325.98
  5. Step 5: Solve for x
    x = 38,547,311,325.98/259,181.27
  6. Step 6: Final answer
    x = 148,727.23

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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.