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Finding the Fourth Proportional to 380,408.10, 525,509.99 and 303,826.65

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Solution

The fourth proportional to 380,408.10, 525,509.99 and 303,826.65 is: 419,717.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,408.10 : 525,509.99 = 303,826.65 : x
  2. Step 2: Convert to fraction form
    380,408.10/525,509.99 = 303,826.65/x
  3. Step 3: Cross multiply
    380,408.10x = 525,509.99 × 303,826.65
  4. Step 4: Simplify right side
    380,408.10x = 159,663,939,423.45
  5. Step 5: Solve for x
    x = 159,663,939,423.45/380,408.10
  6. Step 6: Final answer
    x = 419,717.51

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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.