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Finding the Fourth Proportional to 249,478.78, 344,264.61 and 136,301.44

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Solution

The fourth proportional to 249,478.78, 344,264.61 and 136,301.44 is: 188,087.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,478.78 : 344,264.61 = 136,301.44 : x
  2. Step 2: Convert to fraction form
    249,478.78/344,264.61 = 136,301.44/x
  3. Step 3: Cross multiply
    249,478.78x = 344,264.61 × 136,301.44
  4. Step 4: Simplify right side
    249,478.78x = 46,923,762,084.04
  5. Step 5: Solve for x
    x = 46,923,762,084.04/249,478.78
  6. Step 6: Final answer
    x = 188,087.19

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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.