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Finding the Fourth Proportional to 275,085.72, 379,619.32 and 160,443.52

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Solution

The fourth proportional to 275,085.72, 379,619.32 and 160,443.52 is: 221,412.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,085.72 : 379,619.32 = 160,443.52 : x
  2. Step 2: Convert to fraction form
    275,085.72/379,619.32 = 160,443.52/x
  3. Step 3: Cross multiply
    275,085.72x = 379,619.32 × 160,443.52
  4. Step 4: Simplify right side
    275,085.72x = 60,907,459,960.81
  5. Step 5: Solve for x
    x = 60,907,459,960.81/275,085.72
  6. Step 6: Final answer
    x = 221,412.66

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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.