Home / 383,038.32-528,685.92-221,867.28

Finding the Fourth Proportional to 383,038.32, 528,685.92 and 221,867.28

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Solution

The fourth proportional to 383,038.32, 528,685.92 and 221,867.28 is: 306,230.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,038.32 : 528,685.92 = 221,867.28 : x
  2. Step 2: Convert to fraction form
    383,038.32/528,685.92 = 221,867.28/x
  3. Step 3: Cross multiply
    383,038.32x = 528,685.92 × 221,867.28
  4. Step 4: Simplify right side
    383,038.32x = 117,298,107,044.70
  5. Step 5: Solve for x
    x = 117,298,107,044.70/383,038.32
  6. Step 6: Final answer
    x = 306,230.74

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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.