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Finding the Fourth Proportional to 246,911.47, 340,765.48 and 139,488.42

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Solution

The fourth proportional to 246,911.47, 340,765.48 and 139,488.42 is: 192,509.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,911.47 : 340,765.48 = 139,488.42 : x
  2. Step 2: Convert to fraction form
    246,911.47/340,765.48 = 139,488.42/x
  3. Step 3: Cross multiply
    246,911.47x = 340,765.48 × 139,488.42
  4. Step 4: Simplify right side
    246,911.47x = 47,532,838,047.02
  5. Step 5: Solve for x
    x = 47,532,838,047.02/246,911.47
  6. Step 6: Final answer
    x = 192,509.64

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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.