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Finding the Fourth Proportional to 339,871.50, 469,034.70 and 186,921.51

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Solution

The fourth proportional to 339,871.50, 469,034.70 and 186,921.51 is: 257,958.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,871.50 : 469,034.70 = 186,921.51 : x
  2. Step 2: Convert to fraction form
    339,871.50/469,034.70 = 186,921.51/x
  3. Step 3: Cross multiply
    339,871.50x = 469,034.70 × 186,921.51
  4. Step 4: Simplify right side
    339,871.50x = 87,672,674,366.40
  5. Step 5: Solve for x
    x = 87,672,674,366.40/339,871.50
  6. Step 6: Final answer
    x = 257,958.30

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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.