Home / 281,945.33-389,089.55-154,619.81

Finding the Fourth Proportional to 281,945.33, 389,089.55 and 154,619.81

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Solution

The fourth proportional to 281,945.33, 389,089.55 and 154,619.81 is: 213,378.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,945.33 : 389,089.55 = 154,619.81 : x
  2. Step 2: Convert to fraction form
    281,945.33/389,089.55 = 154,619.81/x
  3. Step 3: Cross multiply
    281,945.33x = 389,089.55 × 154,619.81
  4. Step 4: Simplify right side
    281,945.33x = 60,160,952,293.99
  5. Step 5: Solve for x
    x = 60,160,952,293.99/281,945.33
  6. Step 6: Final answer
    x = 213,378.08

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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.