Home / 386,298.80-579,359.60-105,837.92

Finding the Fourth Proportional to 386,298.80, 579,359.60 and 105,837.92

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Solution

The fourth proportional to 386,298.80, 579,359.60 and 105,837.92 is: 158,732.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,298.80 : 579,359.60 = 105,837.92 : x
  2. Step 2: Convert to fraction form
    386,298.80/579,359.60 = 105,837.92/x
  3. Step 3: Cross multiply
    386,298.80x = 579,359.60 × 105,837.92
  4. Step 4: Simplify right side
    386,298.80x = 61,318,214,996.03
  5. Step 5: Solve for x
    x = 61,318,214,996.03/386,298.80
  6. Step 6: Final answer
    x = 158,732.61

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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.