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Finding the Fourth Proportional to 236,989.80, 355,730.67 and 137,344.68

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Solution

The fourth proportional to 236,989.80, 355,730.67 and 137,344.68 is: 206,159.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,989.80 : 355,730.67 = 137,344.68 : x
  2. Step 2: Convert to fraction form
    236,989.80/355,730.67 = 137,344.68/x
  3. Step 3: Cross multiply
    236,989.80x = 355,730.67 × 137,344.68
  4. Step 4: Simplify right side
    236,989.80x = 48,857,715,037.34
  5. Step 5: Solve for x
    x = 48,857,715,037.34/236,989.80
  6. Step 6: Final answer
    x = 206,159.57

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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.