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Finding the Fourth Proportional to 249,642, 344,505.96 and 136,465.56

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Solution

The fourth proportional to 249,642, 344,505.96 and 136,465.56 is: 188,322.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,642 : 344,505.96 = 136,465.56 : x
  2. Step 2: Convert to fraction form
    249,642/344,505.96 = 136,465.56/x
  3. Step 3: Cross multiply
    249,642x = 344,505.96 × 136,465.56
  4. Step 4: Simplify right side
    249,642x = 47,013,198,754.74
  5. Step 5: Solve for x
    x = 47,013,198,754.74/249,642
  6. Step 6: Final answer
    x = 188,322.47

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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.