Home / 419,489.23-578,875.21-238,177.36

Finding the Fourth Proportional to 419,489.23, 578,875.21 and 238,177.36

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Solution

The fourth proportional to 419,489.23, 578,875.21 and 238,177.36 is: 328,673.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,489.23 : 578,875.21 = 238,177.36 : x
  2. Step 2: Convert to fraction form
    419,489.23/578,875.21 = 238,177.36/x
  3. Step 3: Cross multiply
    419,489.23x = 578,875.21 × 238,177.36
  4. Step 4: Simplify right side
    419,489.23x = 137,874,969,415.40
  5. Step 5: Solve for x
    x = 137,874,969,415.40/419,489.23
  6. Step 6: Final answer
    x = 328,673.44

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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.