Home / 258,258.27-356,405.55-143,539.20

Finding the Fourth Proportional to 258,258.27, 356,405.55 and 143,539.20

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Solution

The fourth proportional to 258,258.27, 356,405.55 and 143,539.20 is: 198,089.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,258.27 : 356,405.55 = 143,539.20 : x
  2. Step 2: Convert to fraction form
    258,258.27/356,405.55 = 143,539.20/x
  3. Step 3: Cross multiply
    258,258.27x = 356,405.55 × 143,539.20
  4. Step 4: Simplify right side
    258,258.27x = 51,158,167,522.56
  5. Step 5: Solve for x
    x = 51,158,167,522.56/258,258.27
  6. Step 6: Final answer
    x = 198,089.17

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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.