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Finding the Fourth Proportional to 378,443.88, 522,331.55 and 366,445.46

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Solution

The fourth proportional to 378,443.88, 522,331.55 and 366,445.46 is: 505,771.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,443.88 : 522,331.55 = 366,445.46 : x
  2. Step 2: Convert to fraction form
    378,443.88/522,331.55 = 366,445.46/x
  3. Step 3: Cross multiply
    378,443.88x = 522,331.55 × 366,445.46
  4. Step 4: Simplify right side
    378,443.88x = 191,406,025,112.26
  5. Step 5: Solve for x
    x = 191,406,025,112.26/378,443.88
  6. Step 6: Final answer
    x = 505,771.23

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1.5x scale

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.