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Finding the Fourth Proportional to 545,651.64, 818,479.08 and 190,665.72

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Solution

The fourth proportional to 545,651.64, 818,479.08 and 190,665.72 is: 285,999.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,651.64 : 818,479.08 = 190,665.72 : x
  2. Step 2: Convert to fraction form
    545,651.64/818,479.08 = 190,665.72/x
  3. Step 3: Cross multiply
    545,651.64x = 818,479.08 × 190,665.72
  4. Step 4: Simplify right side
    545,651.64x = 156,055,903,093.14
  5. Step 5: Solve for x
    x = 156,055,903,093.14/545,651.64
  6. Step 6: Final answer
    x = 285,999.15

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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.