Home / 256,403.04-384,604.84-66,863.25

Finding the Fourth Proportional to 256,403.04, 384,604.84 and 66,863.25

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Solution

The fourth proportional to 256,403.04, 384,604.84 and 66,863.25 is: 100,294.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,403.04 : 384,604.84 = 66,863.25 : x
  2. Step 2: Convert to fraction form
    256,403.04/384,604.84 = 66,863.25/x
  3. Step 3: Cross multiply
    256,403.04x = 384,604.84 × 66,863.25
  4. Step 4: Simplify right side
    256,403.04x = 25,715,928,376.60
  5. Step 5: Solve for x
    x = 25,715,928,376.60/256,403.04
  6. Step 6: Final answer
    x = 100,294.94

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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.