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Finding the Fourth Proportional to 358,965.80, 495,366 and 197,835.80

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Solution

The fourth proportional to 358,965.80, 495,366 and 197,835.80 is: 273,009.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,965.80 : 495,366 = 197,835.80 : x
  2. Step 2: Convert to fraction form
    358,965.80/495,366 = 197,835.80/x
  3. Step 3: Cross multiply
    358,965.80x = 495,366 × 197,835.80
  4. Step 4: Simplify right side
    358,965.80x = 98,001,128,902.80
  5. Step 5: Solve for x
    x = 98,001,128,902.80/358,965.80
  6. Step 6: Final answer
    x = 273,009.65

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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.