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Finding the Fourth Proportional to 203,055.80, 304,632.30 and 103,231.40

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Solution

The fourth proportional to 203,055.80, 304,632.30 and 103,231.40 is: 154,871.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,055.80 : 304,632.30 = 103,231.40 : x
  2. Step 2: Convert to fraction form
    203,055.80/304,632.30 = 103,231.40/x
  3. Step 3: Cross multiply
    203,055.80x = 304,632.30 × 103,231.40
  4. Step 4: Simplify right side
    203,055.80x = 31,447,618,814.22
  5. Step 5: Solve for x
    x = 31,447,618,814.22/203,055.80
  6. Step 6: Final answer
    x = 154,871.81

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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.