Home / 318,522.24-439,024.32-217,745.28

Finding the Fourth Proportional to 318,522.24, 439,024.32 and 217,745.28

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Solution

The fourth proportional to 318,522.24, 439,024.32 and 217,745.28 is: 300,121.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,522.24 : 439,024.32 = 217,745.28 : x
  2. Step 2: Convert to fraction form
    318,522.24/439,024.32 = 217,745.28/x
  3. Step 3: Cross multiply
    318,522.24x = 439,024.32 × 217,745.28
  4. Step 4: Simplify right side
    318,522.24x = 95,595,473,485.21
  5. Step 5: Solve for x
    x = 95,595,473,485.21/318,522.24
  6. Step 6: Final answer
    x = 300,121.82

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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.