Home / 278,279.43-384,025.74-157,418.16

Finding the Fourth Proportional to 278,279.43, 384,025.74 and 157,418.16

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Solution

The fourth proportional to 278,279.43, 384,025.74 and 157,418.16 is: 217,237.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,279.43 : 384,025.74 = 157,418.16 : x
  2. Step 2: Convert to fraction form
    278,279.43/384,025.74 = 157,418.16/x
  3. Step 3: Cross multiply
    278,279.43x = 384,025.74 × 157,418.16
  4. Step 4: Simplify right side
    278,279.43x = 60,452,625,383.44
  5. Step 5: Solve for x
    x = 60,452,625,383.44/278,279.43
  6. Step 6: Final answer
    x = 217,237.13

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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.