Home / 511,106.45-705,358.08-281,663.72

Finding the Fourth Proportional to 511,106.45, 705,358.08 and 281,663.72

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Solution

The fourth proportional to 511,106.45, 705,358.08 and 281,663.72 is: 388,713.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,106.45 : 705,358.08 = 281,663.72 : x
  2. Step 2: Convert to fraction form
    511,106.45/705,358.08 = 281,663.72/x
  3. Step 3: Cross multiply
    511,106.45x = 705,358.08 × 281,663.72
  4. Step 4: Simplify right side
    511,106.45x = 198,673,777,218.07
  5. Step 5: Solve for x
    x = 198,673,777,218.07/511,106.45
  6. Step 6: Final answer
    x = 388,713.11

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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.