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Finding the Fourth Proportional to 249,187.78, 343,846.99 and 140,278.37

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Solution

The fourth proportional to 249,187.78, 343,846.99 and 140,278.37 is: 193,566.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,187.78 : 343,846.99 = 140,278.37 : x
  2. Step 2: Convert to fraction form
    249,187.78/343,846.99 = 140,278.37/x
  3. Step 3: Cross multiply
    249,187.78x = 343,846.99 × 140,278.37
  4. Step 4: Simplify right side
    249,187.78x = 48,234,295,286.61
  5. Step 5: Solve for x
    x = 48,234,295,286.61/249,187.78
  6. Step 6: Final answer
    x = 193,566.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.