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Finding the Fourth Proportional to 246,303.91, 339,894.59 and 138,871.86

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Solution

The fourth proportional to 246,303.91, 339,894.59 and 138,871.86 is: 191,640.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,303.91 : 339,894.59 = 138,871.86 : x
  2. Step 2: Convert to fraction form
    246,303.91/339,894.59 = 138,871.86/x
  3. Step 3: Cross multiply
    246,303.91x = 339,894.59 × 138,871.86
  4. Step 4: Simplify right side
    246,303.91x = 47,201,792,217.76
  5. Step 5: Solve for x
    x = 47,201,792,217.76/246,303.91
  6. Step 6: Final answer
    x = 191,640.45

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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.