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Finding the Fourth Proportional to 495,425.20, 743,137.80 and 121,448.20

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Solution

The fourth proportional to 495,425.20, 743,137.80 and 121,448.20 is: 182,172.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,425.20 : 743,137.80 = 121,448.20 : x
  2. Step 2: Convert to fraction form
    495,425.20/743,137.80 = 121,448.20/x
  3. Step 3: Cross multiply
    495,425.20x = 743,137.80 × 121,448.20
  4. Step 4: Simplify right side
    495,425.20x = 90,252,748,161.96
  5. Step 5: Solve for x
    x = 90,252,748,161.96/495,425.20
  6. Step 6: Final answer
    x = 182,172.30

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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.