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Finding the Fourth Proportional to 305,302.01, 420,829.97 and 240,665.85

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Solution

The fourth proportional to 305,302.01, 420,829.97 and 240,665.85 is: 331,735.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,302.01 : 420,829.97 = 240,665.85 : x
  2. Step 2: Convert to fraction form
    305,302.01/420,829.97 = 240,665.85/x
  3. Step 3: Cross multiply
    305,302.01x = 420,829.97 × 240,665.85
  4. Step 4: Simplify right side
    305,302.01x = 101,279,401,232.20
  5. Step 5: Solve for x
    x = 101,279,401,232.20/305,302.01
  6. Step 6: Final answer
    x = 331,735.13

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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.