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Finding the Fourth Proportional to 628,668.90, 943,143.95 and 229,309.67

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Solution

The fourth proportional to 628,668.90, 943,143.95 and 229,309.67 is: 344,015.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,668.90 : 943,143.95 = 229,309.67 : x
  2. Step 2: Convert to fraction form
    628,668.90/943,143.95 = 229,309.67/x
  3. Step 3: Cross multiply
    628,668.90x = 943,143.95 × 229,309.67
  4. Step 4: Simplify right side
    628,668.90x = 216,272,028,876.66
  5. Step 5: Solve for x
    x = 216,272,028,876.66/628,668.90
  6. Step 6: Final answer
    x = 344,015.79

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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.