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Finding the Fourth Proportional to 378,955.44, 523,128.60 and 249,969.96

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Solution

The fourth proportional to 378,955.44, 523,128.60 and 249,969.96 is: 345,070.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,955.44 : 523,128.60 = 249,969.96 : x
  2. Step 2: Convert to fraction form
    378,955.44/523,128.60 = 249,969.96/x
  3. Step 3: Cross multiply
    378,955.44x = 523,128.60 × 249,969.96
  4. Step 4: Simplify right side
    378,955.44x = 130,766,435,216.86
  5. Step 5: Solve for x
    x = 130,766,435,216.86/378,955.44
  6. Step 6: Final answer
    x = 345,070.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.