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Finding the Fourth Proportional to 351,018.78, 526,051.10 and 148,446.54

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Solution

The fourth proportional to 351,018.78, 526,051.10 and 148,446.54 is: 222,468.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,018.78 : 526,051.10 = 148,446.54 : x
  2. Step 2: Convert to fraction form
    351,018.78/526,051.10 = 148,446.54/x
  3. Step 3: Cross multiply
    351,018.78x = 526,051.10 × 148,446.54
  4. Step 4: Simplify right side
    351,018.78x = 78,090,464,915.96
  5. Step 5: Solve for x
    x = 78,090,464,915.96/351,018.78
  6. Step 6: Final answer
    x = 222,468.05

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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.