Home / 318,821.92-439,975.52-191,499.68

Finding the Fourth Proportional to 318,821.92, 439,975.52 and 191,499.68

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Solution

The fourth proportional to 318,821.92, 439,975.52 and 191,499.68 is: 264,270.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,821.92 : 439,975.52 = 191,499.68 : x
  2. Step 2: Convert to fraction form
    318,821.92/439,975.52 = 191,499.68/x
  3. Step 3: Cross multiply
    318,821.92x = 439,975.52 × 191,499.68
  4. Step 4: Simplify right side
    318,821.92x = 84,255,171,287.83
  5. Step 5: Solve for x
    x = 84,255,171,287.83/318,821.92
  6. Step 6: Final answer
    x = 264,270.32

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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.