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Finding the Fourth Proportional to 429,397.58, 644,096.38 and 113,879.10

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Solution

The fourth proportional to 429,397.58, 644,096.38 and 113,879.10 is: 170,818.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,397.58 : 644,096.38 = 113,879.10 : x
  2. Step 2: Convert to fraction form
    429,397.58/644,096.38 = 113,879.10/x
  3. Step 3: Cross multiply
    429,397.58x = 644,096.38 × 113,879.10
  4. Step 4: Simplify right side
    429,397.58x = 73,349,116,067.66
  5. Step 5: Solve for x
    x = 73,349,116,067.66/429,397.58
  6. Step 6: Final answer
    x = 170,818.65

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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.