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Finding the Fourth Proportional to 447,133.85, 670,685.37 and 127,287.68

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Solution

The fourth proportional to 447,133.85, 670,685.37 and 127,287.68 is: 190,927.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,133.85 : 670,685.37 = 127,287.68 : x
  2. Step 2: Convert to fraction form
    447,133.85/670,685.37 = 127,287.68/x
  3. Step 3: Cross multiply
    447,133.85x = 670,685.37 × 127,287.68
  4. Step 4: Simplify right side
    447,133.85x = 85,369,982,812.79
  5. Step 5: Solve for x
    x = 85,369,982,812.79/447,133.85
  6. Step 6: Final answer
    x = 190,927.13

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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.