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Finding the Fourth Proportional to 305,299.01, 420,825.83 and 240,662.84

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Solution

The fourth proportional to 305,299.01, 420,825.83 and 240,662.84 is: 331,730.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,299.01 : 420,825.83 = 240,662.84 : x
  2. Step 2: Convert to fraction form
    305,299.01/420,825.83 = 240,662.84/x
  3. Step 3: Cross multiply
    305,299.01x = 420,825.83 × 240,662.84
  4. Step 4: Simplify right side
    305,299.01x = 101,277,136,085.71
  5. Step 5: Solve for x
    x = 101,277,136,085.71/305,299.01
  6. Step 6: Final answer
    x = 331,730.97

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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.