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Finding the Fourth Proportional to 531,087.60, 796,999.32 and 211,206.70

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Solution

The fourth proportional to 531,087.60, 796,999.32 and 211,206.70 is: 316,956.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,087.60 : 796,999.32 = 211,206.70 : x
  2. Step 2: Convert to fraction form
    531,087.60/796,999.32 = 211,206.70/x
  3. Step 3: Cross multiply
    531,087.60x = 796,999.32 × 211,206.70
  4. Step 4: Simplify right side
    531,087.60x = 168,331,596,279.44
  5. Step 5: Solve for x
    x = 168,331,596,279.44/531,087.60
  6. Step 6: Final answer
    x = 316,956.37

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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.