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Finding the Fourth Proportional to 253,178.12, 379,431.84 and 134,594.12

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Solution

The fourth proportional to 253,178.12, 379,431.84 and 134,594.12 is: 201,712.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,178.12 : 379,431.84 = 134,594.12 : x
  2. Step 2: Convert to fraction form
    253,178.12/379,431.84 = 134,594.12/x
  3. Step 3: Cross multiply
    253,178.12x = 379,431.84 × 134,594.12
  4. Step 4: Simplify right side
    253,178.12x = 51,069,294,604.78
  5. Step 5: Solve for x
    x = 51,069,294,604.78/253,178.12
  6. Step 6: Final answer
    x = 201,712.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.