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Finding the Fourth Proportional to 253,447.48, 349,756.60 and 137,160.71

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Solution

The fourth proportional to 253,447.48, 349,756.60 and 137,160.71 is: 189,281.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,447.48 : 349,756.60 = 137,160.71 : x
  2. Step 2: Convert to fraction form
    253,447.48/349,756.60 = 137,160.71/x
  3. Step 3: Cross multiply
    253,447.48x = 349,756.60 × 137,160.71
  4. Step 4: Simplify right side
    253,447.48x = 47,972,861,148.60
  5. Step 5: Solve for x
    x = 47,972,861,148.60/253,447.48
  6. Step 6: Final answer
    x = 189,281.27

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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.