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Finding the Fourth Proportional to 399,495.35, 551,502.43 and 246,617.81

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Solution

The fourth proportional to 399,495.35, 551,502.43 and 246,617.81 is: 340,455.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,495.35 : 551,502.43 = 246,617.81 : x
  2. Step 2: Convert to fraction form
    399,495.35/551,502.43 = 246,617.81/x
  3. Step 3: Cross multiply
    399,495.35x = 551,502.43 × 246,617.81
  4. Step 4: Simplify right side
    399,495.35x = 136,010,320,190.36
  5. Step 5: Solve for x
    x = 136,010,320,190.36/399,495.35
  6. Step 6: Final answer
    x = 340,455.33

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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.