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Finding the Fourth Proportional to 478,687.31, 660,589.41 and 260,898.41

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Solution

The fourth proportional to 478,687.31, 660,589.41 and 260,898.41 is: 360,040.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,687.31 : 660,589.41 = 260,898.41 : x
  2. Step 2: Convert to fraction form
    478,687.31/660,589.41 = 260,898.41/x
  3. Step 3: Cross multiply
    478,687.31x = 660,589.41 × 260,898.41
  4. Step 4: Simplify right side
    478,687.31x = 172,346,729,361.68
  5. Step 5: Solve for x
    x = 172,346,729,361.68/478,687.31
  6. Step 6: Final answer
    x = 360,040.31

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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.