Home / 403,138.80-556,344.57-231,089.32

Finding the Fourth Proportional to 403,138.80, 556,344.57 and 231,089.32

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Solution

The fourth proportional to 403,138.80, 556,344.57 and 231,089.32 is: 318,910.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,138.80 : 556,344.57 = 231,089.32 : x
  2. Step 2: Convert to fraction form
    403,138.80/556,344.57 = 231,089.32/x
  3. Step 3: Cross multiply
    403,138.80x = 556,344.57 × 231,089.32
  4. Step 4: Simplify right side
    403,138.80x = 128,565,289,929.01
  5. Step 5: Solve for x
    x = 128,565,289,929.01/403,138.80
  6. Step 6: Final answer
    x = 318,910.73

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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.