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Finding the Fourth Proportional to 249,803.72, 344,736.42 and 136,634.12

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Solution

The fourth proportional to 249,803.72, 344,736.42 and 136,634.12 is: 188,559.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,803.72 : 344,736.42 = 136,634.12 : x
  2. Step 2: Convert to fraction form
    249,803.72/344,736.42 = 136,634.12/x
  3. Step 3: Cross multiply
    249,803.72x = 344,736.42 × 136,634.12
  4. Step 4: Simplify right side
    249,803.72x = 47,102,757,378.65
  5. Step 5: Solve for x
    x = 47,102,757,378.65/249,803.72
  6. Step 6: Final answer
    x = 188,559.07

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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.