Home / 281,927.40-389,064.78-154,595.40

Finding the Fourth Proportional to 281,927.40, 389,064.78 and 154,595.40

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Solution

The fourth proportional to 281,927.40, 389,064.78 and 154,595.40 is: 213,344.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,927.40 : 389,064.78 = 154,595.40 : x
  2. Step 2: Convert to fraction form
    281,927.40/389,064.78 = 154,595.40/x
  3. Step 3: Cross multiply
    281,927.40x = 389,064.78 × 154,595.40
  4. Step 4: Simplify right side
    281,927.40x = 60,147,625,290.01
  5. Step 5: Solve for x
    x = 60,147,625,290.01/281,927.40
  6. Step 6: Final answer
    x = 213,344.38

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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.