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Finding the Fourth Proportional to 249,249.64, 343,962.75 and 136,072.39

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Solution

The fourth proportional to 249,249.64, 343,962.75 and 136,072.39 is: 187,778.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,249.64 : 343,962.75 = 136,072.39 : x
  2. Step 2: Convert to fraction form
    249,249.64/343,962.75 = 136,072.39/x
  3. Step 3: Cross multiply
    249,249.64x = 343,962.75 × 136,072.39
  4. Step 4: Simplify right side
    249,249.64x = 46,803,833,463.47
  5. Step 5: Solve for x
    x = 46,803,833,463.47/249,249.64
  6. Step 6: Final answer
    x = 187,778.94

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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.