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Finding the Fourth Proportional to 479,497.24, 661,332.28 and 307,431.64

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Solution

The fourth proportional to 479,497.24, 661,332.28 and 307,431.64 is: 424,015.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,497.24 : 661,332.28 = 307,431.64 : x
  2. Step 2: Convert to fraction form
    479,497.24/661,332.28 = 307,431.64/x
  3. Step 3: Cross multiply
    479,497.24x = 661,332.28 × 307,431.64
  4. Step 4: Simplify right side
    479,497.24x = 203,314,467,425.34
  5. Step 5: Solve for x
    x = 203,314,467,425.34/479,497.24
  6. Step 6: Final answer
    x = 424,015.93

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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.