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Finding the Fourth Proportional to 478,612.14, 660,489.12 and 263,759.88

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Solution

The fourth proportional to 478,612.14, 660,489.12 and 263,759.88 is: 363,991.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,612.14 : 660,489.12 = 263,759.88 : x
  2. Step 2: Convert to fraction form
    478,612.14/660,489.12 = 263,759.88/x
  3. Step 3: Cross multiply
    478,612.14x = 660,489.12 × 263,759.88
  4. Step 4: Simplify right side
    478,612.14x = 174,210,531,032.51
  5. Step 5: Solve for x
    x = 174,210,531,032.51/478,612.14
  6. Step 6: Final answer
    x = 363,991.04

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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.