Home / 258,571.28-356,742.60-210,742.40

Finding the Fourth Proportional to 258,571.28, 356,742.60 and 210,742.40

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Solution

The fourth proportional to 258,571.28, 356,742.60 and 210,742.40 is: 290,754.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,571.28 : 356,742.60 = 210,742.40 : x
  2. Step 2: Convert to fraction form
    258,571.28/356,742.60 = 210,742.40/x
  3. Step 3: Cross multiply
    258,571.28x = 356,742.60 × 210,742.40
  4. Step 4: Simplify right side
    258,571.28x = 75,180,791,706.24
  5. Step 5: Solve for x
    x = 75,180,791,706.24/258,571.28
  6. Step 6: Final answer
    x = 290,754.61

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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.