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Finding the Fourth Proportional to 478,581.11, 660,446.36 and 263,728.86

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Solution

The fourth proportional to 478,581.11, 660,446.36 and 263,728.86 is: 363,948.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,581.11 : 660,446.36 = 263,728.86 : x
  2. Step 2: Convert to fraction form
    478,581.11/660,446.36 = 263,728.86/x
  3. Step 3: Cross multiply
    478,581.11x = 660,446.36 × 263,728.86
  4. Step 4: Simplify right side
    478,581.11x = 174,178,766,522.63
  5. Step 5: Solve for x
    x = 174,178,766,522.63/478,581.11
  6. Step 6: Final answer
    x = 363,948.27

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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.