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Finding the Fourth Proportional to 777,865.50, 1,166,995.08 and 216,900

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Solution

The fourth proportional to 777,865.50, 1,166,995.08 and 216,900 is: 325,404.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,865.50 : 1,166,995.08 = 216,900 : x
  2. Step 2: Convert to fraction form
    777,865.50/1,166,995.08 = 216,900/x
  3. Step 3: Cross multiply
    777,865.50x = 1,166,995.08 × 216,900
  4. Step 4: Simplify right side
    777,865.50x = 253,121,232,852.00
  5. Step 5: Solve for x
    x = 253,121,232,852.00/777,865.50
  6. Step 6: Final answer
    x = 325,404.88

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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.