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Finding the Fourth Proportional to 380,405.70, 525,506.67 and 303,824.25

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Solution

The fourth proportional to 380,405.70, 525,506.67 and 303,824.25 is: 419,714.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,405.70 : 525,506.67 = 303,824.25 : x
  2. Step 2: Convert to fraction form
    380,405.70/525,506.67 = 303,824.25/x
  3. Step 3: Cross multiply
    380,405.70x = 525,506.67 × 303,824.25
  4. Step 4: Simplify right side
    380,405.70x = 159,661,667,255.21
  5. Step 5: Solve for x
    x = 159,661,667,255.21/380,405.70
  6. Step 6: Final answer
    x = 419,714.19

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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.