Home / 256,582.80-383,837.40-221,907.60

Finding the Fourth Proportional to 256,582.80, 383,837.40 and 221,907.60

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Solution

The fourth proportional to 256,582.80, 383,837.40 and 221,907.60 is: 331,964.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,582.80 : 383,837.40 = 221,907.60 : x
  2. Step 2: Convert to fraction form
    256,582.80/383,837.40 = 221,907.60/x
  3. Step 3: Cross multiply
    256,582.80x = 383,837.40 × 221,907.60
  4. Step 4: Simplify right side
    256,582.80x = 85,176,436,224.24
  5. Step 5: Solve for x
    x = 85,176,436,224.24/256,582.80
  6. Step 6: Final answer
    x = 331,964.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.