Home / 278,256.76-383,994.32-157,395.44

Finding the Fourth Proportional to 278,256.76, 383,994.32 and 157,395.44

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Solution

The fourth proportional to 278,256.76, 383,994.32 and 157,395.44 is: 217,205.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,256.76 : 383,994.32 = 157,395.44 : x
  2. Step 2: Convert to fraction form
    278,256.76/383,994.32 = 157,395.44/x
  3. Step 3: Cross multiply
    278,256.76x = 383,994.32 × 157,395.44
  4. Step 4: Simplify right side
    278,256.76x = 60,438,954,953.90
  5. Step 5: Solve for x
    x = 60,438,954,953.90/278,256.76
  6. Step 6: Final answer
    x = 217,205.70

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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.