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Finding the Fourth Proportional to 400,722.69, 552,998.31 and 216,963.27

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Solution

The fourth proportional to 400,722.69, 552,998.31 and 216,963.27 is: 299,409.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,722.69 : 552,998.31 = 216,963.27 : x
  2. Step 2: Convert to fraction form
    400,722.69/552,998.31 = 216,963.27/x
  3. Step 3: Cross multiply
    400,722.69x = 552,998.31 × 216,963.27
  4. Step 4: Simplify right side
    400,722.69x = 119,980,321,642.07
  5. Step 5: Solve for x
    x = 119,980,321,642.07/400,722.69
  6. Step 6: Final answer
    x = 299,409.85

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1.5x scale

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.