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Finding the Fourth Proportional to 249,212.72, 343,912.56 and 136,035.56

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Solution

The fourth proportional to 249,212.72, 343,912.56 and 136,035.56 is: 187,728.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,212.72 : 343,912.56 = 136,035.56 : x
  2. Step 2: Convert to fraction form
    249,212.72/343,912.56 = 136,035.56/x
  3. Step 3: Cross multiply
    249,212.72x = 343,912.56 × 136,035.56
  4. Step 4: Simplify right side
    249,212.72x = 46,784,337,690.63
  5. Step 5: Solve for x
    x = 46,784,337,690.63/249,212.72
  6. Step 6: Final answer
    x = 187,728.53

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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.