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Finding the Fourth Proportional to 275,742.58, 380,480.15 and 172,364.68

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Solution

The fourth proportional to 275,742.58, 380,480.15 and 172,364.68 is: 237,835.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,742.58 : 380,480.15 = 172,364.68 : x
  2. Step 2: Convert to fraction form
    275,742.58/380,480.15 = 172,364.68/x
  3. Step 3: Cross multiply
    275,742.58x = 380,480.15 × 172,364.68
  4. Step 4: Simplify right side
    275,742.58x = 65,581,339,301.10
  5. Step 5: Solve for x
    x = 65,581,339,301.10/275,742.58
  6. Step 6: Final answer
    x = 237,835.37

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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.