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Finding the Fourth Proportional to 268,321.01, 402,495.30 and 68,643.12

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Solution

The fourth proportional to 268,321.01, 402,495.30 and 68,643.12 is: 102,968.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,321.01 : 402,495.30 = 68,643.12 : x
  2. Step 2: Convert to fraction form
    268,321.01/402,495.30 = 68,643.12/x
  3. Step 3: Cross multiply
    268,321.01x = 402,495.30 × 68,643.12
  4. Step 4: Simplify right side
    268,321.01x = 27,628,533,177.34
  5. Step 5: Solve for x
    x = 27,628,533,177.34/268,321.01
  6. Step 6: Final answer
    x = 102,968.21

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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.