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Finding the Fourth Proportional to 449,439.92, 620,223.40 and 245,491

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Solution

The fourth proportional to 449,439.92, 620,223.40 and 245,491 is: 338,775.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,439.92 : 620,223.40 = 245,491 : x
  2. Step 2: Convert to fraction form
    449,439.92/620,223.40 = 245,491/x
  3. Step 3: Cross multiply
    449,439.92x = 620,223.40 × 245,491
  4. Step 4: Simplify right side
    449,439.92x = 152,259,262,689.40
  5. Step 5: Solve for x
    x = 152,259,262,689.40/449,439.92
  6. Step 6: Final answer
    x = 338,775.56

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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.