Home / 281,975.13-389,127.59-154,651.64

Finding the Fourth Proportional to 281,975.13, 389,127.59 and 154,651.64

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Solution

The fourth proportional to 281,975.13, 389,127.59 and 154,651.64 is: 213,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,975.13 : 389,127.59 = 154,651.64 : x
  2. Step 2: Convert to fraction form
    281,975.13/389,127.59 = 154,651.64/x
  3. Step 3: Cross multiply
    281,975.13x = 389,127.59 × 154,651.64
  4. Step 4: Simplify right side
    281,975.13x = 60,179,217,243.85
  5. Step 5: Solve for x
    x = 60,179,217,243.85/281,975.13
  6. Step 6: Final answer
    x = 213,420.30

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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.