Home / 278,279.52-384,025.86-157,418.22

Finding the Fourth Proportional to 278,279.52, 384,025.86 and 157,418.22

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Solution

The fourth proportional to 278,279.52, 384,025.86 and 157,418.22 is: 217,237.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,279.52 : 384,025.86 = 157,418.22 : x
  2. Step 2: Convert to fraction form
    278,279.52/384,025.86 = 157,418.22/x
  3. Step 3: Cross multiply
    278,279.52x = 384,025.86 × 157,418.22
  4. Step 4: Simplify right side
    278,279.52x = 60,452,667,315.17
  5. Step 5: Solve for x
    x = 60,452,667,315.17/278,279.52
  6. Step 6: Final answer
    x = 217,237.21

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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.