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Finding the Fourth Proportional to 343,973.40, 515,935.80 and 119,279.40

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Solution

The fourth proportional to 343,973.40, 515,935.80 and 119,279.40 is: 178,910.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,973.40 : 515,935.80 = 119,279.40 : x
  2. Step 2: Convert to fraction form
    343,973.40/515,935.80 = 119,279.40/x
  3. Step 3: Cross multiply
    343,973.40x = 515,935.80 × 119,279.40
  4. Step 4: Simplify right side
    343,973.40x = 61,540,512,662.52
  5. Step 5: Solve for x
    x = 61,540,512,662.52/343,973.40
  6. Step 6: Final answer
    x = 178,910.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.