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Finding the Fourth Proportional to 429,245.08, 643,879.80 and 113,702.04

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Solution

The fourth proportional to 429,245.08, 643,879.80 and 113,702.04 is: 170,556.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,245.08 : 643,879.80 = 113,702.04 : x
  2. Step 2: Convert to fraction form
    429,245.08/643,879.80 = 113,702.04/x
  3. Step 3: Cross multiply
    429,245.08x = 643,879.80 × 113,702.04
  4. Step 4: Simplify right side
    429,245.08x = 73,210,446,774.79
  5. Step 5: Solve for x
    x = 73,210,446,774.79/429,245.08
  6. Step 6: Final answer
    x = 170,556.29

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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.