Home / 389,988.37-585,018.26-109,503.73

Finding the Fourth Proportional to 389,988.37, 585,018.26 and 109,503.73

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Solution

The fourth proportional to 389,988.37, 585,018.26 and 109,503.73 is: 164,265.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,988.37 : 585,018.26 = 109,503.73 : x
  2. Step 2: Convert to fraction form
    389,988.37/585,018.26 = 109,503.73/x
  3. Step 3: Cross multiply
    389,988.37x = 585,018.26 × 109,503.73
  4. Step 4: Simplify right side
    389,988.37x = 64,061,681,040.59
  5. Step 5: Solve for x
    x = 64,061,681,040.59/389,988.37
  6. Step 6: Final answer
    x = 164,265.62

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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.