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Finding the Fourth Proportional to 481,036.86, 721,341.99 and 256,355.42

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Solution

The fourth proportional to 481,036.86, 721,341.99 and 256,355.42 is: 384,419.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,036.86 : 721,341.99 = 256,355.42 : x
  2. Step 2: Convert to fraction form
    481,036.86/721,341.99 = 256,355.42/x
  3. Step 3: Cross multiply
    481,036.86x = 721,341.99 × 256,355.42
  4. Step 4: Simplify right side
    481,036.86x = 184,919,925,203.38
  5. Step 5: Solve for x
    x = 184,919,925,203.38/481,036.86
  6. Step 6: Final answer
    x = 384,419.45

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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.