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Finding the Fourth Proportional to 399,282.33, 550,590.12 and 263,142.12

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Solution

The fourth proportional to 399,282.33, 550,590.12 and 263,142.12 is: 362,859.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,282.33 : 550,590.12 = 263,142.12 : x
  2. Step 2: Convert to fraction form
    399,282.33/550,590.12 = 263,142.12/x
  3. Step 3: Cross multiply
    399,282.33x = 550,590.12 × 263,142.12
  4. Step 4: Simplify right side
    399,282.33x = 144,883,451,427.85
  5. Step 5: Solve for x
    x = 144,883,451,427.85/399,282.33
  6. Step 6: Final answer
    x = 362,859.66

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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.