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Finding the Fourth Proportional to 213,662.15, 294,944.55 and 133,129.46

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Solution

The fourth proportional to 213,662.15, 294,944.55 and 133,129.46 is: 183,775.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,662.15 : 294,944.55 = 133,129.46 : x
  2. Step 2: Convert to fraction form
    213,662.15/294,944.55 = 133,129.46/x
  3. Step 3: Cross multiply
    213,662.15x = 294,944.55 × 133,129.46
  4. Step 4: Simplify right side
    213,662.15x = 39,265,809,658.42
  5. Step 5: Solve for x
    x = 39,265,809,658.42/213,662.15
  6. Step 6: Final answer
    x = 183,775.23

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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.