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Finding the Fourth Proportional to 511,081.33, 705,296.90 and 281,646.85

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Solution

The fourth proportional to 511,081.33, 705,296.90 and 281,646.85 is: 388,675.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,081.33 : 705,296.90 = 281,646.85 : x
  2. Step 2: Convert to fraction form
    511,081.33/705,296.90 = 281,646.85/x
  3. Step 3: Cross multiply
    511,081.33x = 705,296.90 × 281,646.85
  4. Step 4: Simplify right side
    511,081.33x = 198,644,650,199.77
  5. Step 5: Solve for x
    x = 198,644,650,199.77/511,081.33
  6. Step 6: Final answer
    x = 388,675.22

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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.