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Finding the Fourth Proportional to 421,232.60, 631,851.60 and 168,534.20

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Solution

The fourth proportional to 421,232.60, 631,851.60 and 168,534.20 is: 252,802.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,232.60 : 631,851.60 = 168,534.20 : x
  2. Step 2: Convert to fraction form
    421,232.60/631,851.60 = 168,534.20/x
  3. Step 3: Cross multiply
    421,232.60x = 631,851.60 × 168,534.20
  4. Step 4: Simplify right side
    421,232.60x = 106,488,603,924.72
  5. Step 5: Solve for x
    x = 106,488,603,924.72/421,232.60
  6. Step 6: Final answer
    x = 252,802.38

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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.