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Finding the Fourth Proportional to 399,892.08, 551,632.68 and 256,492.56

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Solution

The fourth proportional to 399,892.08, 551,632.68 and 256,492.56 is: 353,819.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,892.08 : 551,632.68 = 256,492.56 : x
  2. Step 2: Convert to fraction form
    399,892.08/551,632.68 = 256,492.56/x
  3. Step 3: Cross multiply
    399,892.08x = 551,632.68 × 256,492.56
  4. Step 4: Simplify right side
    399,892.08x = 141,489,678,272.86
  5. Step 5: Solve for x
    x = 141,489,678,272.86/399,892.08
  6. Step 6: Final answer
    x = 353,819.66

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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.