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Finding the Fourth Proportional to 213,372.94, 294,463.13 and 122,728.81

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Solution

The fourth proportional to 213,372.94, 294,463.13 and 122,728.81 is: 169,370.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,372.94 : 294,463.13 = 122,728.81 : x
  2. Step 2: Convert to fraction form
    213,372.94/294,463.13 = 122,728.81/x
  3. Step 3: Cross multiply
    213,372.94x = 294,463.13 × 122,728.81
  4. Step 4: Simplify right side
    213,372.94x = 36,139,109,533.78
  5. Step 5: Solve for x
    x = 36,139,109,533.78/213,372.94
  6. Step 6: Final answer
    x = 169,370.63

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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.