Home / 313,954.15-433,247.66-178,000.72

Finding the Fourth Proportional to 313,954.15, 433,247.66 and 178,000.72

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Solution

The fourth proportional to 313,954.15, 433,247.66 and 178,000.72 is: 245,635.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,954.15 : 433,247.66 = 178,000.72 : x
  2. Step 2: Convert to fraction form
    313,954.15/433,247.66 = 178,000.72/x
  3. Step 3: Cross multiply
    313,954.15x = 433,247.66 × 178,000.72
  4. Step 4: Simplify right side
    313,954.15x = 77,118,395,418.32
  5. Step 5: Solve for x
    x = 77,118,395,418.32/313,954.15
  6. Step 6: Final answer
    x = 245,635.85

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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.