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Finding the Fourth Proportional to 249,991.74, 344,995.47 and 142,579.26

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Solution

The fourth proportional to 249,991.74, 344,995.47 and 142,579.26 is: 196,763.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,991.74 : 344,995.47 = 142,579.26 : x
  2. Step 2: Convert to fraction form
    249,991.74/344,995.47 = 142,579.26/x
  3. Step 3: Cross multiply
    249,991.74x = 344,995.47 × 142,579.26
  4. Step 4: Simplify right side
    249,991.74x = 49,189,198,815.95
  5. Step 5: Solve for x
    x = 49,189,198,815.95/249,991.74
  6. Step 6: Final answer
    x = 196,763.30

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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.