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Finding the Fourth Proportional to 249,941.25, 344,918.93 and 136,764

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Solution

The fourth proportional to 249,941.25, 344,918.93 and 136,764 is: 188,734.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,941.25 : 344,918.93 = 136,764 : x
  2. Step 2: Convert to fraction form
    249,941.25/344,918.93 = 136,764/x
  3. Step 3: Cross multiply
    249,941.25x = 344,918.93 × 136,764
  4. Step 4: Simplify right side
    249,941.25x = 47,172,491,858.70
  5. Step 5: Solve for x
    x = 47,172,491,858.70/249,941.25
  6. Step 6: Final answer
    x = 188,734.32

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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.