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Finding the Fourth Proportional to 249,640.88, 374,383.56 and 83,390

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Solution

The fourth proportional to 249,640.88, 374,383.56 and 83,390 is: 125,059.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,640.88 : 374,383.56 = 83,390 : x
  2. Step 2: Convert to fraction form
    249,640.88/374,383.56 = 83,390/x
  3. Step 3: Cross multiply
    249,640.88x = 374,383.56 × 83,390
  4. Step 4: Simplify right side
    249,640.88x = 31,219,845,068.40
  5. Step 5: Solve for x
    x = 31,219,845,068.40/249,640.88
  6. Step 6: Final answer
    x = 125,059.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.