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Finding the Fourth Proportional to 249,568.56, 344,403.78 and 136,391.28

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Solution

The fourth proportional to 249,568.56, 344,403.78 and 136,391.28 is: 188,219.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,568.56 : 344,403.78 = 136,391.28 : x
  2. Step 2: Convert to fraction form
    249,568.56/344,403.78 = 136,391.28/x
  3. Step 3: Cross multiply
    249,568.56x = 344,403.78 × 136,391.28
  4. Step 4: Simplify right side
    249,568.56x = 46,973,672,391.04
  5. Step 5: Solve for x
    x = 46,973,672,391.04/249,568.56
  6. Step 6: Final answer
    x = 188,219.51

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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.