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Finding the Fourth Proportional to 347,668.57, 521,722.25 and 147,988.64

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Solution

The fourth proportional to 347,668.57, 521,722.25 and 147,988.64 is: 222,076.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,668.57 : 521,722.25 = 147,988.64 : x
  2. Step 2: Convert to fraction form
    347,668.57/521,722.25 = 147,988.64/x
  3. Step 3: Cross multiply
    347,668.57x = 521,722.25 × 147,988.64
  4. Step 4: Simplify right side
    347,668.57x = 77,208,964,419.87
  5. Step 5: Solve for x
    x = 77,208,964,419.87/347,668.57
  6. Step 6: Final answer
    x = 222,076.34

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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.