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Finding the Fourth Proportional to 400,903.08, 552,802.89 and 255,478.49

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Solution

The fourth proportional to 400,903.08, 552,802.89 and 255,478.49 is: 352,277.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,903.08 : 552,802.89 = 255,478.49 : x
  2. Step 2: Convert to fraction form
    400,903.08/552,802.89 = 255,478.49/x
  3. Step 3: Cross multiply
    400,903.08x = 552,802.89 × 255,478.49
  4. Step 4: Simplify right side
    400,903.08x = 141,229,247,604.84
  5. Step 5: Solve for x
    x = 141,229,247,604.84/400,903.08
  6. Step 6: Final answer
    x = 352,277.78

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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.