Home / 449,869.76-620,820.21-245,921.53

Finding the Fourth Proportional to 449,869.76, 620,820.21 and 245,921.53

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Solution

The fourth proportional to 449,869.76, 620,820.21 and 245,921.53 is: 339,371.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,869.76 : 620,820.21 = 245,921.53 : x
  2. Step 2: Convert to fraction form
    449,869.76/620,820.21 = 245,921.53/x
  3. Step 3: Cross multiply
    449,869.76x = 620,820.21 × 245,921.53
  4. Step 4: Simplify right side
    449,869.76x = 152,673,055,898.12
  5. Step 5: Solve for x
    x = 152,673,055,898.12/449,869.76
  6. Step 6: Final answer
    x = 339,371.68

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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.