Home / 419,985.68-579,589.80-238,669.04

Finding the Fourth Proportional to 419,985.68, 579,589.80 and 238,669.04

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Solution

The fourth proportional to 419,985.68, 579,589.80 and 238,669.04 is: 329,368.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,985.68 : 579,589.80 = 238,669.04 : x
  2. Step 2: Convert to fraction form
    419,985.68/579,589.80 = 238,669.04/x
  3. Step 3: Cross multiply
    419,985.68x = 579,589.80 × 238,669.04
  4. Step 4: Simplify right side
    419,985.68x = 138,330,141,159.79
  5. Step 5: Solve for x
    x = 138,330,141,159.79/419,985.68
  6. Step 6: Final answer
    x = 329,368.71

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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.