Home / 282,118.01-389,321.65-154,790.87

Finding the Fourth Proportional to 282,118.01, 389,321.65 and 154,790.87

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Solution

The fourth proportional to 282,118.01, 389,321.65 and 154,790.87 is: 213,610.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,118.01 : 389,321.65 = 154,790.87 : x
  2. Step 2: Convert to fraction form
    282,118.01/389,321.65 = 154,790.87/x
  3. Step 3: Cross multiply
    282,118.01x = 389,321.65 × 154,790.87
  4. Step 4: Simplify right side
    282,118.01x = 60,263,436,913.34
  5. Step 5: Solve for x
    x = 60,263,436,913.34/282,118.01
  6. Step 6: Final answer
    x = 213,610.74

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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.