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Finding the Fourth Proportional to 416,320.71, 624,503.77 and 131,990.69

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Solution

The fourth proportional to 416,320.71, 624,503.77 and 131,990.69 is: 197,993.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,320.71 : 624,503.77 = 131,990.69 : x
  2. Step 2: Convert to fraction form
    416,320.71/624,503.77 = 131,990.69/x
  3. Step 3: Cross multiply
    416,320.71x = 624,503.77 × 131,990.69
  4. Step 4: Simplify right side
    416,320.71x = 82,428,685,112.41
  5. Step 5: Solve for x
    x = 82,428,685,112.41/416,320.71
  6. Step 6: Final answer
    x = 197,993.24

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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.