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Finding the Fourth Proportional to 203,017.76, 304,546.92 and 69,880.40

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Solution

The fourth proportional to 203,017.76, 304,546.92 and 69,880.40 is: 104,827.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,017.76 : 304,546.92 = 69,880.40 : x
  2. Step 2: Convert to fraction form
    203,017.76/304,546.92 = 69,880.40/x
  3. Step 3: Cross multiply
    203,017.76x = 304,546.92 × 69,880.40
  4. Step 4: Simplify right side
    203,017.76x = 21,281,860,588.37
  5. Step 5: Solve for x
    x = 21,281,860,588.37/203,017.76
  6. Step 6: Final answer
    x = 104,827.58

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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.