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Finding the Fourth Proportional to 421,232.04, 631,880.70 and 140,750.28

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Solution

The fourth proportional to 421,232.04, 631,880.70 and 140,750.28 is: 211,136.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,232.04 : 631,880.70 = 140,750.28 : x
  2. Step 2: Convert to fraction form
    421,232.04/631,880.70 = 140,750.28/x
  3. Step 3: Cross multiply
    421,232.04x = 631,880.70 × 140,750.28
  4. Step 4: Simplify right side
    421,232.04x = 88,937,385,451.60
  5. Step 5: Solve for x
    x = 88,937,385,451.60/421,232.04
  6. Step 6: Final answer
    x = 211,136.33

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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.