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Finding the Fourth Proportional to 245,384.69, 338,627.27 and 136,487.88

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Solution

The fourth proportional to 245,384.69, 338,627.27 and 136,487.88 is: 188,351.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,384.69 : 338,627.27 = 136,487.88 : x
  2. Step 2: Convert to fraction form
    245,384.69/338,627.27 = 136,487.88/x
  3. Step 3: Cross multiply
    245,384.69x = 338,627.27 × 136,487.88
  4. Step 4: Simplify right side
    245,384.69x = 46,218,517,510.05
  5. Step 5: Solve for x
    x = 46,218,517,510.05/245,384.69
  6. Step 6: Final answer
    x = 188,351.27

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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.