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Finding the Fourth Proportional to 389,016.69, 536,822.28 and 216,952.31

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Solution

The fourth proportional to 389,016.69, 536,822.28 and 216,952.31 is: 299,382.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,016.69 : 536,822.28 = 216,952.31 : x
  2. Step 2: Convert to fraction form
    389,016.69/536,822.28 = 216,952.31/x
  3. Step 3: Cross multiply
    389,016.69x = 536,822.28 × 216,952.31
  4. Step 4: Simplify right side
    389,016.69x = 116,464,831,021.36
  5. Step 5: Solve for x
    x = 116,464,831,021.36/389,016.69
  6. Step 6: Final answer
    x = 299,382.61

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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.