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Finding the Fourth Proportional to 249,742.40, 374,662.20 and 72,255.20

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Solution

The fourth proportional to 249,742.40, 374,662.20 and 72,255.20 is: 108,396.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,742.40 : 374,662.20 = 72,255.20 : x
  2. Step 2: Convert to fraction form
    249,742.40/374,662.20 = 72,255.20/x
  3. Step 3: Cross multiply
    249,742.40x = 374,662.20 × 72,255.20
  4. Step 4: Simplify right side
    249,742.40x = 27,071,292,193.44
  5. Step 5: Solve for x
    x = 27,071,292,193.44/249,742.40
  6. Step 6: Final answer
    x = 108,396.86

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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.