Home / 275,819.18-380,621.58-153,310.94

Finding the Fourth Proportional to 275,819.18, 380,621.58 and 153,310.94

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Solution

The fourth proportional to 275,819.18, 380,621.58 and 153,310.94 is: 211,564.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,819.18 : 380,621.58 = 153,310.94 : x
  2. Step 2: Convert to fraction form
    275,819.18/380,621.58 = 153,310.94/x
  3. Step 3: Cross multiply
    275,819.18x = 380,621.58 × 153,310.94
  4. Step 4: Simplify right side
    275,819.18x = 58,353,452,214.09
  5. Step 5: Solve for x
    x = 58,353,452,214.09/275,819.18
  6. Step 6: Final answer
    x = 211,564.16

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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.