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Finding the Fourth Proportional to 305,663.94, 420,944.31 and 220,646.34

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Solution

The fourth proportional to 305,663.94, 420,944.31 and 220,646.34 is: 303,862.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,663.94 : 420,944.31 = 220,646.34 : x
  2. Step 2: Convert to fraction form
    305,663.94/420,944.31 = 220,646.34/x
  3. Step 3: Cross multiply
    305,663.94x = 420,944.31 × 220,646.34
  4. Step 4: Simplify right side
    305,663.94x = 92,879,821,345.33
  5. Step 5: Solve for x
    x = 92,879,821,345.33/305,663.94
  6. Step 6: Final answer
    x = 303,862.54

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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.