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Finding the Fourth Proportional to 305,304.51, 420,833.42 and 240,668.34

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Solution

The fourth proportional to 305,304.51, 420,833.42 and 240,668.34 is: 331,738.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,304.51 : 420,833.42 = 240,668.34 : x
  2. Step 2: Convert to fraction form
    305,304.51/420,833.42 = 240,668.34/x
  3. Step 3: Cross multiply
    305,304.51x = 420,833.42 × 240,668.34
  4. Step 4: Simplify right side
    305,304.51x = 101,281,277,300.41
  5. Step 5: Solve for x
    x = 101,281,277,300.41/305,304.51
  6. Step 6: Final answer
    x = 331,738.56

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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.