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Finding the Fourth Proportional to 421,100.71, 631,053.96 and 325,887.67

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Solution

The fourth proportional to 421,100.71, 631,053.96 and 325,887.67 is: 488,369.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,100.71 : 631,053.96 = 325,887.67 : x
  2. Step 2: Convert to fraction form
    421,100.71/631,053.96 = 325,887.67/x
  3. Step 3: Cross multiply
    421,100.71x = 631,053.96 × 325,887.67
  4. Step 4: Simplify right side
    421,100.71x = 205,652,704,668.67
  5. Step 5: Solve for x
    x = 205,652,704,668.67/421,100.71
  6. Step 6: Final answer
    x = 488,369.41

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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.