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Finding the Fourth Proportional to 275,415.59, 380,090.27 and 154,564.61

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Solution

The fourth proportional to 275,415.59, 380,090.27 and 154,564.61 is: 213,308.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,415.59 : 380,090.27 = 154,564.61 : x
  2. Step 2: Convert to fraction form
    275,415.59/380,090.27 = 154,564.61/x
  3. Step 3: Cross multiply
    275,415.59x = 380,090.27 × 154,564.61
  4. Step 4: Simplify right side
    275,415.59x = 58,748,502,833.30
  5. Step 5: Solve for x
    x = 58,748,502,833.30/275,415.59
  6. Step 6: Final answer
    x = 213,308.56

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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.