Home / 275,457.08-380,138.34-154,605.88

Finding the Fourth Proportional to 275,457.08, 380,138.34 and 154,605.88

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Solution

The fourth proportional to 275,457.08, 380,138.34 and 154,605.88 is: 213,360.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,457.08 : 380,138.34 = 154,605.88 : x
  2. Step 2: Convert to fraction form
    275,457.08/380,138.34 = 154,605.88/x
  3. Step 3: Cross multiply
    275,457.08x = 380,138.34 × 154,605.88
  4. Step 4: Simplify right side
    275,457.08x = 58,771,622,577.44
  5. Step 5: Solve for x
    x = 58,771,622,577.44/275,457.08
  6. Step 6: Final answer
    x = 213,360.36

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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.