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Finding the Fourth Proportional to 268,137.09, 402,205.11 and 68,457.40

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Solution

The fourth proportional to 268,137.09, 402,205.11 and 68,457.40 is: 102,685.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,137.09 : 402,205.11 = 68,457.40 : x
  2. Step 2: Convert to fraction form
    268,137.09/402,205.11 = 68,457.40/x
  3. Step 3: Cross multiply
    268,137.09x = 402,205.11 × 68,457.40
  4. Step 4: Simplify right side
    268,137.09x = 27,533,916,097.31
  5. Step 5: Solve for x
    x = 27,533,916,097.31/268,137.09
  6. Step 6: Final answer
    x = 102,685.97

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1.5x scale

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.