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Finding the Fourth Proportional to 249,348.78, 344,102.58 and 136,171.53

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Solution

The fourth proportional to 249,348.78, 344,102.58 and 136,171.53 is: 187,917.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,348.78 : 344,102.58 = 136,171.53 : x
  2. Step 2: Convert to fraction form
    249,348.78/344,102.58 = 136,171.53/x
  3. Step 3: Cross multiply
    249,348.78x = 344,102.58 × 136,171.53
  4. Step 4: Simplify right side
    249,348.78x = 46,856,974,795.55
  5. Step 5: Solve for x
    x = 46,856,974,795.55/249,348.78
  6. Step 6: Final answer
    x = 187,917.40

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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.