Home / 230,529.40-318,131.97-128,561.32

Finding the Fourth Proportional to 230,529.40, 318,131.97 and 128,561.32

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Solution

The fourth proportional to 230,529.40, 318,131.97 and 128,561.32 is: 177,415.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,529.40 : 318,131.97 = 128,561.32 : x
  2. Step 2: Convert to fraction form
    230,529.40/318,131.97 = 128,561.32/x
  3. Step 3: Cross multiply
    230,529.40x = 318,131.97 × 128,561.32
  4. Step 4: Simplify right side
    230,529.40x = 40,899,465,997.40
  5. Step 5: Solve for x
    x = 40,899,465,997.40/230,529.40
  6. Step 6: Final answer
    x = 177,415.40

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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.