Home / 278,138.27-383,838.39-157,297.64

Finding the Fourth Proportional to 278,138.27, 383,838.39 and 157,297.64

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Solution

The fourth proportional to 278,138.27, 383,838.39 and 157,297.64 is: 217,075.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,138.27 : 383,838.39 = 157,297.64 : x
  2. Step 2: Convert to fraction form
    278,138.27/383,838.39 = 157,297.64/x
  3. Step 3: Cross multiply
    278,138.27x = 383,838.39 × 157,297.64
  4. Step 4: Simplify right side
    278,138.27x = 60,376,870,969.21
  5. Step 5: Solve for x
    x = 60,376,870,969.21/278,138.27
  6. Step 6: Final answer
    x = 217,075.02

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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.