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Finding the Fourth Proportional to 246,070, 339,479.40 and 155,392.12

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Solution

The fourth proportional to 246,070, 339,479.40 and 155,392.12 is: 214,379.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,070 : 339,479.40 = 155,392.12 : x
  2. Step 2: Convert to fraction form
    246,070/339,479.40 = 155,392.12/x
  3. Step 3: Cross multiply
    246,070x = 339,479.40 × 155,392.12
  4. Step 4: Simplify right side
    246,070x = 52,752,423,662.33
  5. Step 5: Solve for x
    x = 52,752,423,662.33/246,070
  6. Step 6: Final answer
    x = 214,379.74

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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.