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Finding the Fourth Proportional to 365,028.76, 547,155.41 and 215,339.55

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Solution

The fourth proportional to 365,028.76, 547,155.41 and 215,339.55 is: 322,780.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,028.76 : 547,155.41 = 215,339.55 : x
  2. Step 2: Convert to fraction form
    365,028.76/547,155.41 = 215,339.55/x
  3. Step 3: Cross multiply
    365,028.76x = 547,155.41 × 215,339.55
  4. Step 4: Simplify right side
    365,028.76x = 117,824,196,640.94
  5. Step 5: Solve for x
    x = 117,824,196,640.94/365,028.76
  6. Step 6: Final answer
    x = 322,780.58

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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.