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Finding the Fourth Proportional to 300,916.40, 415,075.80 and 193,625.84

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Solution

The fourth proportional to 300,916.40, 415,075.80 and 193,625.84 is: 267,082.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,916.40 : 415,075.80 = 193,625.84 : x
  2. Step 2: Convert to fraction form
    300,916.40/415,075.80 = 193,625.84/x
  3. Step 3: Cross multiply
    300,916.40x = 415,075.80 × 193,625.84
  4. Step 4: Simplify right side
    300,916.40x = 80,369,400,438.67
  5. Step 5: Solve for x
    x = 80,369,400,438.67/300,916.40
  6. Step 6: Final answer
    x = 267,082.15

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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.