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Finding the Fourth Proportional to 213,497.25, 294,626.21 and 128,631.93

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Solution

The fourth proportional to 213,497.25, 294,626.21 and 128,631.93 is: 177,512.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,497.25 : 294,626.21 = 128,631.93 : x
  2. Step 2: Convert to fraction form
    213,497.25/294,626.21 = 128,631.93/x
  3. Step 3: Cross multiply
    213,497.25x = 294,626.21 × 128,631.93
  4. Step 4: Simplify right side
    213,497.25x = 37,898,337,377.73
  5. Step 5: Solve for x
    x = 37,898,337,377.73/213,497.25
  6. Step 6: Final answer
    x = 177,512.06

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1.5x scale

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.