Home / 449,138.20-673,718.10-133,605.40

Finding the Fourth Proportional to 449,138.20, 673,718.10 and 133,605.40

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Solution

The fourth proportional to 449,138.20, 673,718.10 and 133,605.40 is: 200,411.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,138.20 : 673,718.10 = 133,605.40 : x
  2. Step 2: Convert to fraction form
    449,138.20/673,718.10 = 133,605.40/x
  3. Step 3: Cross multiply
    449,138.20x = 673,718.10 × 133,605.40
  4. Step 4: Simplify right side
    449,138.20x = 90,012,376,237.74
  5. Step 5: Solve for x
    x = 90,012,376,237.74/449,138.20
  6. Step 6: Final answer
    x = 200,411.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.