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Finding the Fourth Proportional to 259,702.40, 389,246.40 and 109,942.40

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Solution

The fourth proportional to 259,702.40, 389,246.40 and 109,942.40 is: 164,783.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,702.40 : 389,246.40 = 109,942.40 : x
  2. Step 2: Convert to fraction form
    259,702.40/389,246.40 = 109,942.40/x
  3. Step 3: Cross multiply
    259,702.40x = 389,246.40 × 109,942.40
  4. Step 4: Simplify right side
    259,702.40x = 42,794,683,407.36
  5. Step 5: Solve for x
    x = 42,794,683,407.36/259,702.40
  6. Step 6: Final answer
    x = 164,783.55

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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.