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Finding the Fourth Proportional to 249,940.80, 344,920.32 and 136,764.48

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Solution

The fourth proportional to 249,940.80, 344,920.32 and 136,764.48 is: 188,736.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,940.80 : 344,920.32 = 136,764.48 : x
  2. Step 2: Convert to fraction form
    249,940.80/344,920.32 = 136,764.48/x
  3. Step 3: Cross multiply
    249,940.80x = 344,920.32 × 136,764.48
  4. Step 4: Simplify right side
    249,940.80x = 47,172,848,206.23
  5. Step 5: Solve for x
    x = 47,172,848,206.23/249,940.80
  6. Step 6: Final answer
    x = 188,736.09

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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.