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Finding the Fourth Proportional to 479,881.86, 720,265.60 and 243,390.62

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Solution

The fourth proportional to 479,881.86, 720,265.60 and 243,390.62 is: 365,310.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,881.86 : 720,265.60 = 243,390.62 : x
  2. Step 2: Convert to fraction form
    479,881.86/720,265.60 = 243,390.62/x
  3. Step 3: Cross multiply
    479,881.86x = 720,265.60 × 243,390.62
  4. Step 4: Simplify right side
    479,881.86x = 175,305,890,948.67
  5. Step 5: Solve for x
    x = 175,305,890,948.67/479,881.86
  6. Step 6: Final answer
    x = 365,310.52

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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.