Home / 275,311.79-380,000.10-188,132.18

Finding the Fourth Proportional to 275,311.79, 380,000.10 and 188,132.18

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Solution

The fourth proportional to 275,311.79, 380,000.10 and 188,132.18 is: 259,670.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,311.79 : 380,000.10 = 188,132.18 : x
  2. Step 2: Convert to fraction form
    275,311.79/380,000.10 = 188,132.18/x
  3. Step 3: Cross multiply
    275,311.79x = 380,000.10 × 188,132.18
  4. Step 4: Simplify right side
    275,311.79x = 71,490,245,313.22
  5. Step 5: Solve for x
    x = 71,490,245,313.22/275,311.79
  6. Step 6: Final answer
    x = 259,670.12

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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.