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Finding the Fourth Proportional to 265,940.68, 399,060 and 141,278.44

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Solution

The fourth proportional to 265,940.68, 399,060 and 141,278.44 is: 211,996.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,940.68 : 399,060 = 141,278.44 : x
  2. Step 2: Convert to fraction form
    265,940.68/399,060 = 141,278.44/x
  3. Step 3: Cross multiply
    265,940.68x = 399,060 × 141,278.44
  4. Step 4: Simplify right side
    265,940.68x = 56,378,574,266.40
  5. Step 5: Solve for x
    x = 56,378,574,266.40/265,940.68
  6. Step 6: Final answer
    x = 211,996.80

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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.