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Finding the Fourth Proportional to 249,201.63, 343,901.84 and 136,021.95

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Solution

The fourth proportional to 249,201.63, 343,901.84 and 136,021.95 is: 187,712.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,201.63 : 343,901.84 = 136,021.95 : x
  2. Step 2: Convert to fraction form
    249,201.63/343,901.84 = 136,021.95/x
  3. Step 3: Cross multiply
    249,201.63x = 343,901.84 × 136,021.95
  4. Step 4: Simplify right side
    249,201.63x = 46,778,198,205.28
  5. Step 5: Solve for x
    x = 46,778,198,205.28/249,201.63
  6. Step 6: Final answer
    x = 187,712.25

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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.