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Finding the Fourth Proportional to 249,682.28, 344,561.52 and 136,505

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Solution

The fourth proportional to 249,682.28, 344,561.52 and 136,505 is: 188,376.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,682.28 : 344,561.52 = 136,505 : x
  2. Step 2: Convert to fraction form
    249,682.28/344,561.52 = 136,505/x
  3. Step 3: Cross multiply
    249,682.28x = 344,561.52 × 136,505
  4. Step 4: Simplify right side
    249,682.28x = 47,034,370,287.60
  5. Step 5: Solve for x
    x = 47,034,370,287.60/249,682.28
  6. Step 6: Final answer
    x = 188,376.89

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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.