Home / 278,519.90-384,406.55-157,668.06

Finding the Fourth Proportional to 278,519.90, 384,406.55 and 157,668.06

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Solution

The fourth proportional to 278,519.90, 384,406.55 and 157,668.06 is: 217,609.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,519.90 : 384,406.55 = 157,668.06 : x
  2. Step 2: Convert to fraction form
    278,519.90/384,406.55 = 157,668.06/x
  3. Step 3: Cross multiply
    278,519.90x = 384,406.55 × 157,668.06
  4. Step 4: Simplify right side
    278,519.90x = 60,608,634,989.79
  5. Step 5: Solve for x
    x = 60,608,634,989.79/278,519.90
  6. Step 6: Final answer
    x = 217,609.71

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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.