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Finding the Fourth Proportional to 378,445.31, 515,258.52 and 377,264.33

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Solution

The fourth proportional to 378,445.31, 515,258.52 and 377,264.33 is: 513,650.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,445.31 : 515,258.52 = 377,264.33 : x
  2. Step 2: Convert to fraction form
    378,445.31/515,258.52 = 377,264.33/x
  3. Step 3: Cross multiply
    378,445.31x = 515,258.52 × 377,264.33
  4. Step 4: Simplify right side
    378,445.31x = 194,388,660,324.59
  5. Step 5: Solve for x
    x = 194,388,660,324.59/378,445.31
  6. Step 6: Final answer
    x = 513,650.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.