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Finding the Fourth Proportional to 402,100.22, 554,759.58 and 256,990.94

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Solution

The fourth proportional to 402,100.22, 554,759.58 and 256,990.94 is: 354,558.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,100.22 : 554,759.58 = 256,990.94 : x
  2. Step 2: Convert to fraction form
    402,100.22/554,759.58 = 256,990.94/x
  3. Step 3: Cross multiply
    402,100.22x = 554,759.58 × 256,990.94
  4. Step 4: Simplify right side
    402,100.22x = 142,568,185,938.21
  5. Step 5: Solve for x
    x = 142,568,185,938.21/402,100.22
  6. Step 6: Final answer
    x = 354,558.84

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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.