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Finding the Fourth Proportional to 218,379.90, 301,528.50 and 214,892.30

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Solution

The fourth proportional to 218,379.90, 301,528.50 and 214,892.30 is: 296,712.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,379.90 : 301,528.50 = 214,892.30 : x
  2. Step 2: Convert to fraction form
    218,379.90/301,528.50 = 214,892.30/x
  3. Step 3: Cross multiply
    218,379.90x = 301,528.50 × 214,892.30
  4. Step 4: Simplify right side
    218,379.90x = 64,796,152,880.55
  5. Step 5: Solve for x
    x = 64,796,152,880.55/218,379.90
  6. Step 6: Final answer
    x = 296,712.99

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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.