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Finding the Fourth Proportional to 304,016.78, 455,779.20 and 126,657.02

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Solution

The fourth proportional to 304,016.78, 455,779.20 and 126,657.02 is: 189,883.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,016.78 : 455,779.20 = 126,657.02 : x
  2. Step 2: Convert to fraction form
    304,016.78/455,779.20 = 126,657.02/x
  3. Step 3: Cross multiply
    304,016.78x = 455,779.20 × 126,657.02
  4. Step 4: Simplify right side
    304,016.78x = 57,727,635,249.98
  5. Step 5: Solve for x
    x = 57,727,635,249.98/304,016.78
  6. Step 6: Final answer
    x = 189,883.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.