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Finding the Fourth Proportional to 281,640.59, 388,533.73 and 249,408.05

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Solution

The fourth proportional to 281,640.59, 388,533.73 and 249,408.05 is: 344,067.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,640.59 : 388,533.73 = 249,408.05 : x
  2. Step 2: Convert to fraction form
    281,640.59/388,533.73 = 249,408.05/x
  3. Step 3: Cross multiply
    281,640.59x = 388,533.73 × 249,408.05
  4. Step 4: Simplify right side
    281,640.59x = 96,903,438,711.49
  5. Step 5: Solve for x
    x = 96,903,438,711.49/281,640.59
  6. Step 6: Final answer
    x = 344,067.74

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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.