Home / 380,408.23-525,510.16-303,826.78

Finding the Fourth Proportional to 380,408.23, 525,510.16 and 303,826.78

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Solution

The fourth proportional to 380,408.23, 525,510.16 and 303,826.78 is: 419,717.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,408.23 : 525,510.16 = 303,826.78 : x
  2. Step 2: Convert to fraction form
    380,408.23/525,510.16 = 303,826.78/x
  3. Step 3: Cross multiply
    380,408.23x = 525,510.16 × 303,826.78
  4. Step 4: Simplify right side
    380,408.23x = 159,664,057,142.53
  5. Step 5: Solve for x
    x = 159,664,057,142.53/380,408.23
  6. Step 6: Final answer
    x = 419,717.68

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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.