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Finding the Fourth Proportional to 400,718.75, 552,991.88 and 230,963.81

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Solution

The fourth proportional to 400,718.75, 552,991.88 and 230,963.81 is: 318,730.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,718.75 : 552,991.88 = 230,963.81 : x
  2. Step 2: Convert to fraction form
    400,718.75/552,991.88 = 230,963.81/x
  3. Step 3: Cross multiply
    400,718.75x = 552,991.88 × 230,963.81
  4. Step 4: Simplify right side
    400,718.75x = 127,721,111,503.86
  5. Step 5: Solve for x
    x = 127,721,111,503.86/400,718.75
  6. Step 6: Final answer
    x = 318,730.06

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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.