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Finding the Fourth Proportional to 268,512.60, 402,423.30 and 163,219.80

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Solution

The fourth proportional to 268,512.60, 402,423.30 and 163,219.80 is: 244,619.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,512.60 : 402,423.30 = 163,219.80 : x
  2. Step 2: Convert to fraction form
    268,512.60/402,423.30 = 163,219.80/x
  3. Step 3: Cross multiply
    268,512.60x = 402,423.30 × 163,219.80
  4. Step 4: Simplify right side
    268,512.60x = 65,683,450,541.34
  5. Step 5: Solve for x
    x = 65,683,450,541.34/268,512.60
  6. Step 6: Final answer
    x = 244,619.62

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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.