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Finding the Fourth Proportional to 249,195.80, 343,890.22 and 136,018.56

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Solution

The fourth proportional to 249,195.80, 343,890.22 and 136,018.56 is: 187,705.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,195.80 : 343,890.22 = 136,018.56 : x
  2. Step 2: Convert to fraction form
    249,195.80/343,890.22 = 136,018.56/x
  3. Step 3: Cross multiply
    249,195.80x = 343,890.22 × 136,018.56
  4. Step 4: Simplify right side
    249,195.80x = 46,775,452,522.48
  5. Step 5: Solve for x
    x = 46,775,452,522.48/249,195.80
  6. Step 6: Final answer
    x = 187,705.62

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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.