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Finding the Fourth Proportional to 479,241.86, 661,060.71 and 307,101.87

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Solution

The fourth proportional to 479,241.86, 661,060.71 and 307,101.87 is: 423,612.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,241.86 : 661,060.71 = 307,101.87 : x
  2. Step 2: Convert to fraction form
    479,241.86/661,060.71 = 307,101.87/x
  3. Step 3: Cross multiply
    479,241.86x = 661,060.71 × 307,101.87
  4. Step 4: Simplify right side
    479,241.86x = 203,012,980,224.53
  5. Step 5: Solve for x
    x = 203,012,980,224.53/479,241.86
  6. Step 6: Final answer
    x = 423,612.79

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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.