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Finding the Fourth Proportional to 351,685.20, 526,750.20 and 272,175.60

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Solution

The fourth proportional to 351,685.20, 526,750.20 and 272,175.60 is: 407,661.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,685.20 : 526,750.20 = 272,175.60 : x
  2. Step 2: Convert to fraction form
    351,685.20/526,750.20 = 272,175.60/x
  3. Step 3: Cross multiply
    351,685.20x = 526,750.20 × 272,175.60
  4. Step 4: Simplify right side
    351,685.20x = 143,368,551,735.12
  5. Step 5: Solve for x
    x = 143,368,551,735.12/351,685.20
  6. Step 6: Final answer
    x = 407,661.60

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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.