Home / 383,945.40-529,815.45-211,870.23

Finding the Fourth Proportional to 383,945.40, 529,815.45 and 211,870.23

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Solution

The fourth proportional to 383,945.40, 529,815.45 and 211,870.23 is: 292,364.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,945.40 : 529,815.45 = 211,870.23 : x
  2. Step 2: Convert to fraction form
    383,945.40/529,815.45 = 211,870.23/x
  3. Step 3: Cross multiply
    383,945.40x = 529,815.45 × 211,870.23
  4. Step 4: Simplify right side
    383,945.40x = 112,252,121,249.05
  5. Step 5: Solve for x
    x = 112,252,121,249.05/383,945.40
  6. Step 6: Final answer
    x = 292,364.80

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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.