Home / 278,389.62-384,178.70-151,065.23

Finding the Fourth Proportional to 278,389.62, 384,178.70 and 151,065.23

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Solution

The fourth proportional to 278,389.62, 384,178.70 and 151,065.23 is: 208,470.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,389.62 : 384,178.70 = 151,065.23 : x
  2. Step 2: Convert to fraction form
    278,389.62/384,178.70 = 151,065.23/x
  3. Step 3: Cross multiply
    278,389.62x = 384,178.70 × 151,065.23
  4. Step 4: Simplify right side
    278,389.62x = 58,036,042,133.37
  5. Step 5: Solve for x
    x = 58,036,042,133.37/278,389.62
  6. Step 6: Final answer
    x = 208,470.57

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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.