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Finding the Fourth Proportional to 246,697.86, 340,424.04 and 139,278.50

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Solution

The fourth proportional to 246,697.86, 340,424.04 and 139,278.50 is: 192,193.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,697.86 : 340,424.04 = 139,278.50 : x
  2. Step 2: Convert to fraction form
    246,697.86/340,424.04 = 139,278.50/x
  3. Step 3: Cross multiply
    246,697.86x = 340,424.04 × 139,278.50
  4. Step 4: Simplify right side
    246,697.86x = 47,413,749,751.90
  5. Step 5: Solve for x
    x = 47,413,749,751.90/246,697.86
  6. Step 6: Final answer
    x = 192,193.60

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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.