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Finding the Fourth Proportional to 449,321.76, 620,052.12 and 245,378.16

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Solution

The fourth proportional to 449,321.76, 620,052.12 and 245,378.16 is: 338,615.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,321.76 : 620,052.12 = 245,378.16 : x
  2. Step 2: Convert to fraction form
    449,321.76/620,052.12 = 245,378.16/x
  3. Step 3: Cross multiply
    449,321.76x = 620,052.12 × 245,378.16
  4. Step 4: Simplify right side
    449,321.76x = 152,147,248,309.70
  5. Step 5: Solve for x
    x = 152,147,248,309.70/449,321.76
  6. Step 6: Final answer
    x = 338,615.36

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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.