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Finding the Fourth Proportional to 380,407.26, 525,508.82 and 303,825.81

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Solution

The fourth proportional to 380,407.26, 525,508.82 and 303,825.81 is: 419,716.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,407.26 : 525,508.82 = 303,825.81 : x
  2. Step 2: Convert to fraction form
    380,407.26/525,508.82 = 303,825.81/x
  3. Step 3: Cross multiply
    380,407.26x = 525,508.82 × 303,825.81
  4. Step 4: Simplify right side
    380,407.26x = 159,663,143,658.21
  5. Step 5: Solve for x
    x = 159,663,143,658.21/380,407.26
  6. Step 6: Final answer
    x = 419,716.34

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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.