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Finding the Fourth Proportional to 203,054.80, 304,630.80 and 103,230.40

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Solution

The fourth proportional to 203,054.80, 304,630.80 and 103,230.40 is: 154,870.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,054.80 : 304,630.80 = 103,230.40 : x
  2. Step 2: Convert to fraction form
    203,054.80/304,630.80 = 103,230.40/x
  3. Step 3: Cross multiply
    203,054.80x = 304,630.80 × 103,230.40
  4. Step 4: Simplify right side
    203,054.80x = 31,447,159,336.32
  5. Step 5: Solve for x
    x = 31,447,159,336.32/203,054.80
  6. Step 6: Final answer
    x = 154,870.31

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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.