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Finding the Fourth Proportional to 512,492.82, 768,812.73 and 157,536.64

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Solution

The fourth proportional to 512,492.82, 768,812.73 and 157,536.64 is: 236,327.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,492.82 : 768,812.73 = 157,536.64 : x
  2. Step 2: Convert to fraction form
    512,492.82/768,812.73 = 157,536.64/x
  3. Step 3: Cross multiply
    512,492.82x = 768,812.73 × 157,536.64
  4. Step 4: Simplify right side
    512,492.82x = 121,116,174,273.43
  5. Step 5: Solve for x
    x = 121,116,174,273.43/512,492.82
  6. Step 6: Final answer
    x = 236,327.55

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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.