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Finding the Fourth Proportional to 339,962.94, 469,185.48 and 212,679.54

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Solution

The fourth proportional to 339,962.94, 469,185.48 and 212,679.54 is: 293,520.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,962.94 : 469,185.48 = 212,679.54 : x
  2. Step 2: Convert to fraction form
    339,962.94/469,185.48 = 212,679.54/x
  3. Step 3: Cross multiply
    339,962.94x = 469,185.48 × 212,679.54
  4. Step 4: Simplify right side
    339,962.94x = 99,786,152,061.08
  5. Step 5: Solve for x
    x = 99,786,152,061.08/339,962.94
  6. Step 6: Final answer
    x = 293,520.68

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1.5x scale

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.