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Finding the Fourth Proportional to 378,444.31, 515,257.16 and 377,263.33

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Solution

The fourth proportional to 378,444.31, 515,257.16 and 377,263.33 is: 513,649.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,444.31 : 515,257.16 = 377,263.33 : x
  2. Step 2: Convert to fraction form
    378,444.31/515,257.16 = 377,263.33/x
  3. Step 3: Cross multiply
    378,444.31x = 515,257.16 × 377,263.33
  4. Step 4: Simplify right side
    378,444.31x = 194,387,628,813.48
  5. Step 5: Solve for x
    x = 194,387,628,813.48/378,444.31
  6. Step 6: Final answer
    x = 513,649.23

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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.