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Finding the Fourth Proportional to 249,797.75, 344,720.90 and 136,620.50

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Solution

The fourth proportional to 249,797.75, 344,720.90 and 136,620.50 is: 188,536.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,797.75 : 344,720.90 = 136,620.50 : x
  2. Step 2: Convert to fraction form
    249,797.75/344,720.90 = 136,620.50/x
  3. Step 3: Cross multiply
    249,797.75x = 344,720.90 × 136,620.50
  4. Step 4: Simplify right side
    249,797.75x = 47,095,942,060.00
  5. Step 5: Solve for x
    x = 47,095,942,060.00/249,797.75
  6. Step 6: Final answer
    x = 188,536.29

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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.