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Finding the Fourth Proportional to 268,665.59, 402,666.21 and 135,583.91

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Solution

The fourth proportional to 268,665.59, 402,666.21 and 135,583.91 is: 203,208.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,665.59 : 402,666.21 = 135,583.91 : x
  2. Step 2: Convert to fraction form
    268,665.59/402,666.21 = 135,583.91/x
  3. Step 3: Cross multiply
    268,665.59x = 402,666.21 × 135,583.91
  4. Step 4: Simplify right side
    268,665.59x = 54,595,059,176.68
  5. Step 5: Solve for x
    x = 54,595,059,176.68/268,665.59
  6. Step 6: Final answer
    x = 203,208.23

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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.