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Finding the Fourth Proportional to 300,881.36, 415,278 and 173,539.64

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Solution

The fourth proportional to 300,881.36, 415,278 and 173,539.64 is: 239,520.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,881.36 : 415,278 = 173,539.64 : x
  2. Step 2: Convert to fraction form
    300,881.36/415,278 = 173,539.64/x
  3. Step 3: Cross multiply
    300,881.36x = 415,278 × 173,539.64
  4. Step 4: Simplify right side
    300,881.36x = 72,067,192,543.53
  5. Step 5: Solve for x
    x = 72,067,192,543.53/300,881.36
  6. Step 6: Final answer
    x = 239,520.30

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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.