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Finding the Fourth Proportional to 268,655.49, 402,968.64 and 81,652.41

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Solution

The fourth proportional to 268,655.49, 402,968.64 and 81,652.41 is: 122,474.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,655.49 : 402,968.64 = 81,652.41 : x
  2. Step 2: Convert to fraction form
    268,655.49/402,968.64 = 81,652.41/x
  3. Step 3: Cross multiply
    268,655.49x = 402,968.64 × 81,652.41
  4. Step 4: Simplify right side
    268,655.49x = 32,903,360,610.42
  5. Step 5: Solve for x
    x = 32,903,360,610.42/268,655.49
  6. Step 6: Final answer
    x = 122,474.18

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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.