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Finding the Fourth Proportional to 305,244.70, 420,752.21 and 240,609.13

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Solution

The fourth proportional to 305,244.70, 420,752.21 and 240,609.13 is: 331,657.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,244.70 : 420,752.21 = 240,609.13 : x
  2. Step 2: Convert to fraction form
    305,244.70/420,752.21 = 240,609.13/x
  3. Step 3: Cross multiply
    305,244.70x = 420,752.21 × 240,609.13
  4. Step 4: Simplify right side
    305,244.70x = 101,236,823,193.68
  5. Step 5: Solve for x
    x = 101,236,823,193.68/305,244.70
  6. Step 6: Final answer
    x = 331,657.92

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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.