Home / 386,270.08-579,422.40-105,781.12

Finding the Fourth Proportional to 386,270.08, 579,422.40 and 105,781.12

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Solution

The fourth proportional to 386,270.08, 579,422.40 and 105,781.12 is: 158,676.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,270.08 : 579,422.40 = 105,781.12 : x
  2. Step 2: Convert to fraction form
    386,270.08/579,422.40 = 105,781.12/x
  3. Step 3: Cross multiply
    386,270.08x = 579,422.40 × 105,781.12
  4. Step 4: Simplify right side
    386,270.08x = 61,291,950,425.09
  5. Step 5: Solve for x
    x = 61,291,950,425.09/386,270.08
  6. Step 6: Final answer
    x = 158,676.41

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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.