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Finding the Fourth Proportional to 253,128.24, 379,695.60 and 75,594.60

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Solution

The fourth proportional to 253,128.24, 379,695.60 and 75,594.60 is: 113,392.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,128.24 : 379,695.60 = 75,594.60 : x
  2. Step 2: Convert to fraction form
    253,128.24/379,695.60 = 75,594.60/x
  3. Step 3: Cross multiply
    253,128.24x = 379,695.60 × 75,594.60
  4. Step 4: Simplify right side
    253,128.24x = 28,702,937,003.76
  5. Step 5: Solve for x
    x = 28,702,937,003.76/253,128.24
  6. Step 6: Final answer
    x = 113,392.87

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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.