Home / 386,129.69-579,188.32-119,890.46

Finding the Fourth Proportional to 386,129.69, 579,188.32 and 119,890.46

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Solution

The fourth proportional to 386,129.69, 579,188.32 and 119,890.46 is: 179,833.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,129.69 : 579,188.32 = 119,890.46 : x
  2. Step 2: Convert to fraction form
    386,129.69/579,188.32 = 119,890.46/x
  3. Step 3: Cross multiply
    386,129.69x = 579,188.32 × 119,890.46
  4. Step 4: Simplify right side
    386,129.69x = 69,439,154,111.43
  5. Step 5: Solve for x
    x = 69,439,154,111.43/386,129.69
  6. Step 6: Final answer
    x = 179,833.76

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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.