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Finding the Fourth Proportional to 213,356.72, 294,440.72 and 122,712.57

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Solution

The fourth proportional to 213,356.72, 294,440.72 and 122,712.57 is: 169,348.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,356.72 : 294,440.72 = 122,712.57 : x
  2. Step 2: Convert to fraction form
    213,356.72/294,440.72 = 122,712.57/x
  3. Step 3: Cross multiply
    213,356.72x = 294,440.72 × 122,712.57
  4. Step 4: Simplify right side
    213,356.72x = 36,131,576,850.29
  5. Step 5: Solve for x
    x = 36,131,576,850.29/213,356.72
  6. Step 6: Final answer
    x = 169,348.21

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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.