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Finding the Fourth Proportional to 491,420.73, 737,048.88 and 136,470.63

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Solution

The fourth proportional to 491,420.73, 737,048.88 and 136,470.63 is: 204,683.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,420.73 : 737,048.88 = 136,470.63 : x
  2. Step 2: Convert to fraction form
    491,420.73/737,048.88 = 136,470.63/x
  3. Step 3: Cross multiply
    491,420.73x = 737,048.88 × 136,470.63
  4. Step 4: Simplify right side
    491,420.73x = 100,585,524,994.39
  5. Step 5: Solve for x
    x = 100,585,524,994.39/491,420.73
  6. Step 6: Final answer
    x = 204,683.11

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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.