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Finding the Fourth Proportional to 351,054.78, 526,877.57 and 328,911.40

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Solution

The fourth proportional to 351,054.78, 526,877.57 and 328,911.40 is: 493,643.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,054.78 : 526,877.57 = 328,911.40 : x
  2. Step 2: Convert to fraction form
    351,054.78/526,877.57 = 328,911.40/x
  3. Step 3: Cross multiply
    351,054.78x = 526,877.57 × 328,911.40
  4. Step 4: Simplify right side
    351,054.78x = 173,296,039,177.30
  5. Step 5: Solve for x
    x = 173,296,039,177.30/351,054.78
  6. Step 6: Final answer
    x = 493,643.87

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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.