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Finding the Fourth Proportional to 249,693.96, 374,578.28 and 91,910.40

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Solution

The fourth proportional to 249,693.96, 374,578.28 and 91,910.40 is: 137,879.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,693.96 : 374,578.28 = 91,910.40 : x
  2. Step 2: Convert to fraction form
    249,693.96/374,578.28 = 91,910.40/x
  3. Step 3: Cross multiply
    249,693.96x = 374,578.28 × 91,910.40
  4. Step 4: Simplify right side
    249,693.96x = 34,427,639,546.11
  5. Step 5: Solve for x
    x = 34,427,639,546.11/249,693.96
  6. Step 6: Final answer
    x = 137,879.34

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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.