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Finding the Fourth Proportional to 256,090.58, 353,370.21 and 148,643.54

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Solution

The fourth proportional to 256,090.58, 353,370.21 and 148,643.54 is: 205,107.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,090.58 : 353,370.21 = 148,643.54 : x
  2. Step 2: Convert to fraction form
    256,090.58/353,370.21 = 148,643.54/x
  3. Step 3: Cross multiply
    256,090.58x = 353,370.21 × 148,643.54
  4. Step 4: Simplify right side
    256,090.58x = 52,526,198,944.94
  5. Step 5: Solve for x
    x = 52,526,198,944.94/256,090.58
  6. Step 6: Final answer
    x = 205,107.89

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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.