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Finding the Fourth Proportional to 358,970.30, 495,391.46 and 195,640.42

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Solution

The fourth proportional to 358,970.30, 495,391.46 and 195,640.42 is: 269,990.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,970.30 : 495,391.46 = 195,640.42 : x
  2. Step 2: Convert to fraction form
    358,970.30/495,391.46 = 195,640.42/x
  3. Step 3: Cross multiply
    358,970.30x = 495,391.46 × 195,640.42
  4. Step 4: Simplify right side
    358,970.30x = 96,918,593,298.81
  5. Step 5: Solve for x
    x = 96,918,593,298.81/358,970.30
  6. Step 6: Final answer
    x = 269,990.56

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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.