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Finding the Fourth Proportional to 249,787.68, 344,709.72 and 136,608

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Solution

The fourth proportional to 249,787.68, 344,709.72 and 136,608 is: 188,520.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,787.68 : 344,709.72 = 136,608 : x
  2. Step 2: Convert to fraction form
    249,787.68/344,709.72 = 136,608/x
  3. Step 3: Cross multiply
    249,787.68x = 344,709.72 × 136,608
  4. Step 4: Simplify right side
    249,787.68x = 47,090,105,429.76
  5. Step 5: Solve for x
    x = 47,090,105,429.76/249,787.68
  6. Step 6: Final answer
    x = 188,520.53

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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.