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Finding the Fourth Proportional to 254,803.75, 382,205.70 and 74,889.21

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Solution

The fourth proportional to 254,803.75, 382,205.70 and 74,889.21 is: 112,333.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,803.75 : 382,205.70 = 74,889.21 : x
  2. Step 2: Convert to fraction form
    254,803.75/382,205.70 = 74,889.21/x
  3. Step 3: Cross multiply
    254,803.75x = 382,205.70 × 74,889.21
  4. Step 4: Simplify right side
    254,803.75x = 28,623,082,319.18
  5. Step 5: Solve for x
    x = 28,623,082,319.18/254,803.75
  6. Step 6: Final answer
    x = 112,333.83

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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.