Home / 279,840.80-386,190.73-159,002.55

Finding the Fourth Proportional to 279,840.80, 386,190.73 and 159,002.55

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Solution

The fourth proportional to 279,840.80, 386,190.73 and 159,002.55 is: 219,429.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,840.80 : 386,190.73 = 159,002.55 : x
  2. Step 2: Convert to fraction form
    279,840.80/386,190.73 = 159,002.55/x
  3. Step 3: Cross multiply
    279,840.80x = 386,190.73 × 159,002.55
  4. Step 4: Simplify right side
    279,840.80x = 61,405,311,055.11
  5. Step 5: Solve for x
    x = 61,405,311,055.11/279,840.80
  6. Step 6: Final answer
    x = 219,429.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.