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Finding the Fourth Proportional to 249,687.72, 374,568.90 and 91,904.19

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Solution

The fourth proportional to 249,687.72, 374,568.90 and 91,904.19 is: 137,870.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,687.72 : 374,568.90 = 91,904.19 : x
  2. Step 2: Convert to fraction form
    249,687.72/374,568.90 = 91,904.19/x
  3. Step 3: Cross multiply
    249,687.72x = 374,568.90 × 91,904.19
  4. Step 4: Simplify right side
    249,687.72x = 34,424,451,353.69
  5. Step 5: Solve for x
    x = 34,424,451,353.69/249,687.72
  6. Step 6: Final answer
    x = 137,870.02

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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.