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Finding the Fourth Proportional to 266,068.30, 399,102.45 and 218,829.10

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Solution

The fourth proportional to 266,068.30, 399,102.45 and 218,829.10 is: 328,243.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,068.30 : 399,102.45 = 218,829.10 : x
  2. Step 2: Convert to fraction form
    266,068.30/399,102.45 = 218,829.10/x
  3. Step 3: Cross multiply
    266,068.30x = 399,102.45 × 218,829.10
  4. Step 4: Simplify right side
    266,068.30x = 87,335,229,941.30
  5. Step 5: Solve for x
    x = 87,335,229,941.30/266,068.30
  6. Step 6: Final answer
    x = 328,243.65

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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.