Home / 230,731.22-318,408.47-128,755.59

Finding the Fourth Proportional to 230,731.22, 318,408.47 and 128,755.59

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Solution

The fourth proportional to 230,731.22, 318,408.47 and 128,755.59 is: 177,682.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,731.22 : 318,408.47 = 128,755.59 : x
  2. Step 2: Convert to fraction form
    230,731.22/318,408.47 = 128,755.59/x
  3. Step 3: Cross multiply
    230,731.22x = 318,408.47 × 128,755.59
  4. Step 4: Simplify right side
    230,731.22x = 40,996,870,851.92
  5. Step 5: Solve for x
    x = 40,996,870,851.92/230,731.22
  6. Step 6: Final answer
    x = 177,682.38

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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.