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Finding the Fourth Proportional to 380,408.60, 525,510.69 and 303,827.15

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Solution

The fourth proportional to 380,408.60, 525,510.69 and 303,827.15 is: 419,718.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,408.60 : 525,510.69 = 303,827.15 : x
  2. Step 2: Convert to fraction form
    380,408.60/525,510.69 = 303,827.15/x
  3. Step 3: Cross multiply
    380,408.60x = 525,510.69 × 303,827.15
  4. Step 4: Simplify right side
    380,408.60x = 159,664,415,237.23
  5. Step 5: Solve for x
    x = 159,664,415,237.23/380,408.60
  6. Step 6: Final answer
    x = 419,718.21

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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.