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Finding the Fourth Proportional to 249,197.80, 343,893.46 and 136,020.55

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Solution

The fourth proportional to 249,197.80, 343,893.46 and 136,020.55 is: 187,708.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,197.80 : 343,893.46 = 136,020.55 : x
  2. Step 2: Convert to fraction form
    249,197.80/343,893.46 = 136,020.55/x
  3. Step 3: Cross multiply
    249,197.80x = 343,893.46 × 136,020.55
  4. Step 4: Simplify right side
    249,197.80x = 46,776,577,570.60
  5. Step 5: Solve for x
    x = 46,776,577,570.60/249,197.80
  6. Step 6: Final answer
    x = 187,708.63

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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.