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Finding the Fourth Proportional to 508,443.31, 701,649.83 and 279,004.43

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Solution

The fourth proportional to 508,443.31, 701,649.83 and 279,004.43 is: 385,025.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,443.31 : 701,649.83 = 279,004.43 : x
  2. Step 2: Convert to fraction form
    508,443.31/701,649.83 = 279,004.43/x
  3. Step 3: Cross multiply
    508,443.31x = 701,649.83 × 279,004.43
  4. Step 4: Simplify right side
    508,443.31x = 195,763,411,685.24
  5. Step 5: Solve for x
    x = 195,763,411,685.24/508,443.31
  6. Step 6: Final answer
    x = 385,025.05

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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.