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Finding the Fourth Proportional to 439,719.63, 606,813.29 and 248,728.92

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Solution

The fourth proportional to 439,719.63, 606,813.29 and 248,728.92 is: 343,246.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,719.63 : 606,813.29 = 248,728.92 : x
  2. Step 2: Convert to fraction form
    439,719.63/606,813.29 = 248,728.92/x
  3. Step 3: Cross multiply
    439,719.63x = 606,813.29 × 248,728.92
  4. Step 4: Simplify right side
    439,719.63x = 150,932,014,263.35
  5. Step 5: Solve for x
    x = 150,932,014,263.35/439,719.63
  6. Step 6: Final answer
    x = 343,246.02

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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.