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Finding the Fourth Proportional to 449,583.74, 620,407.20 and 245,641.72

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Solution

The fourth proportional to 449,583.74, 620,407.20 and 245,641.72 is: 338,975.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,583.74 : 620,407.20 = 245,641.72 : x
  2. Step 2: Convert to fraction form
    449,583.74/620,407.20 = 245,641.72/x
  3. Step 3: Cross multiply
    449,583.74x = 620,407.20 × 245,641.72
  4. Step 4: Simplify right side
    449,583.74x = 152,397,891,708.38
  5. Step 5: Solve for x
    x = 152,397,891,708.38/449,583.74
  6. Step 6: Final answer
    x = 338,975.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.