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Finding the Fourth Proportional to 249,615.87, 374,422.41 and 99,890.80

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Solution

The fourth proportional to 249,615.87, 374,422.41 and 99,890.80 is: 149,835.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,615.87 : 374,422.41 = 99,890.80 : x
  2. Step 2: Convert to fraction form
    249,615.87/374,422.41 = 99,890.80/x
  3. Step 3: Cross multiply
    249,615.87x = 374,422.41 × 99,890.80
  4. Step 4: Simplify right side
    249,615.87x = 37,401,354,072.83
  5. Step 5: Solve for x
    x = 37,401,354,072.83/249,615.87
  6. Step 6: Final answer
    x = 149,835.64

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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.