Home / 386,499.20-579,806.40-137,160.32

Finding the Fourth Proportional to 386,499.20, 579,806.40 and 137,160.32

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Solution

The fourth proportional to 386,499.20, 579,806.40 and 137,160.32 is: 205,760.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,499.20 : 579,806.40 = 137,160.32 : x
  2. Step 2: Convert to fraction form
    386,499.20/579,806.40 = 137,160.32/x
  3. Step 3: Cross multiply
    386,499.20x = 579,806.40 × 137,160.32
  4. Step 4: Simplify right side
    386,499.20x = 79,526,431,362.05
  5. Step 5: Solve for x
    x = 79,526,431,362.05/386,499.20
  6. Step 6: Final answer
    x = 205,760.92

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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.