Home / 281,181.38-388,030.30-153,856.97

Finding the Fourth Proportional to 281,181.38, 388,030.30 and 153,856.97

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Solution

The fourth proportional to 281,181.38, 388,030.30 and 153,856.97 is: 212,322.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,181.38 : 388,030.30 = 153,856.97 : x
  2. Step 2: Convert to fraction form
    281,181.38/388,030.30 = 153,856.97/x
  3. Step 3: Cross multiply
    281,181.38x = 388,030.30 × 153,856.97
  4. Step 4: Simplify right side
    281,181.38x = 59,701,165,356.51
  5. Step 5: Solve for x
    x = 59,701,165,356.51/281,181.38
  6. Step 6: Final answer
    x = 212,322.62

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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.