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Finding the Fourth Proportional to 347,838.88, 521,732.80 and 111,118

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Solution

The fourth proportional to 347,838.88, 521,732.80 and 111,118 is: 166,668.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,838.88 : 521,732.80 = 111,118 : x
  2. Step 2: Convert to fraction form
    347,838.88/521,732.80 = 111,118/x
  3. Step 3: Cross multiply
    347,838.88x = 521,732.80 × 111,118
  4. Step 4: Simplify right side
    347,838.88x = 57,973,905,270.40
  5. Step 5: Solve for x
    x = 57,973,905,270.40/347,838.88
  6. Step 6: Final answer
    x = 166,668.85

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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.