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Finding the Fourth Proportional to 666,103.55, 999,164.44 and 216,826.32

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Solution

The fourth proportional to 666,103.55, 999,164.44 and 216,826.32 is: 325,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,103.55 : 999,164.44 = 216,826.32 : x
  2. Step 2: Convert to fraction form
    666,103.55/999,164.44 = 216,826.32/x
  3. Step 3: Cross multiply
    666,103.55x = 999,164.44 × 216,826.32
  4. Step 4: Simplify right side
    666,103.55x = 216,645,148,600.06
  5. Step 5: Solve for x
    x = 216,645,148,600.06/666,103.55
  6. Step 6: Final answer
    x = 325,242.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.