Home / 386,350.40-579,525.60-199,726.40

Finding the Fourth Proportional to 386,350.40, 579,525.60 and 199,726.40

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Solution

The fourth proportional to 386,350.40, 579,525.60 and 199,726.40 is: 299,589.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,350.40 : 579,525.60 = 199,726.40 : x
  2. Step 2: Convert to fraction form
    386,350.40/579,525.60 = 199,726.40/x
  3. Step 3: Cross multiply
    386,350.40x = 579,525.60 × 199,726.40
  4. Step 4: Simplify right side
    386,350.40x = 115,746,561,795.84
  5. Step 5: Solve for x
    x = 115,746,561,795.84/386,350.40
  6. Step 6: Final answer
    x = 299,589.60

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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.