Home / 354,949.18-490,348.05-307,119.49

Finding the Fourth Proportional to 354,949.18, 490,348.05 and 307,119.49

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Solution

The fourth proportional to 354,949.18, 490,348.05 and 307,119.49 is: 424,273.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,949.18 : 490,348.05 = 307,119.49 : x
  2. Step 2: Convert to fraction form
    354,949.18/490,348.05 = 307,119.49/x
  3. Step 3: Cross multiply
    354,949.18x = 490,348.05 × 307,119.49
  4. Step 4: Simplify right side
    354,949.18x = 150,595,440,660.93
  5. Step 5: Solve for x
    x = 150,595,440,660.93/354,949.18
  6. Step 6: Final answer
    x = 424,273.25

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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.