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Finding the Fourth Proportional to 291,890.86, 437,800.06 and 78,675.44

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Solution

The fourth proportional to 291,890.86, 437,800.06 and 78,675.44 is: 118,003.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,890.86 : 437,800.06 = 78,675.44 : x
  2. Step 2: Convert to fraction form
    291,890.86/437,800.06 = 78,675.44/x
  3. Step 3: Cross multiply
    291,890.86x = 437,800.06 × 78,675.44
  4. Step 4: Simplify right side
    291,890.86x = 34,444,109,819.32
  5. Step 5: Solve for x
    x = 34,444,109,819.32/291,890.86
  6. Step 6: Final answer
    x = 118,003.39

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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.