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Finding the Fourth Proportional to 611,369.64, 916,759.62 and 256,288.44

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Solution

The fourth proportional to 611,369.64, 916,759.62 and 256,288.44 is: 384,309.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,369.64 : 916,759.62 = 256,288.44 : x
  2. Step 2: Convert to fraction form
    611,369.64/916,759.62 = 256,288.44/x
  3. Step 3: Cross multiply
    611,369.64x = 916,759.62 × 256,288.44
  4. Step 4: Simplify right side
    611,369.64x = 234,954,892,864.79
  5. Step 5: Solve for x
    x = 234,954,892,864.79/611,369.64
  6. Step 6: Final answer
    x = 384,309.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.