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Finding the Fourth Proportional to 351,503.36, 526,029.76 and 287,584.64

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Solution

The fourth proportional to 351,503.36, 526,029.76 and 287,584.64 is: 430,374.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,503.36 : 526,029.76 = 287,584.64 : x
  2. Step 2: Convert to fraction form
    351,503.36/526,029.76 = 287,584.64/x
  3. Step 3: Cross multiply
    351,503.36x = 526,029.76 × 287,584.64
  4. Step 4: Simplify right side
    351,503.36x = 151,278,079,158.89
  5. Step 5: Solve for x
    x = 151,278,079,158.89/351,503.36
  6. Step 6: Final answer
    x = 430,374.49

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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.