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Finding the Fourth Proportional to 478,539.90, 660,375.99 and 263,699.82

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Solution

The fourth proportional to 478,539.90, 660,375.99 and 263,699.82 is: 363,900.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,539.90 : 660,375.99 = 263,699.82 : x
  2. Step 2: Convert to fraction form
    478,539.90/660,375.99 = 263,699.82/x
  3. Step 3: Cross multiply
    478,539.90x = 660,375.99 × 263,699.82
  4. Step 4: Simplify right side
    478,539.90x = 174,141,029,695.32
  5. Step 5: Solve for x
    x = 174,141,029,695.32/478,539.90
  6. Step 6: Final answer
    x = 363,900.75

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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.