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Finding the Fourth Proportional to 531,287.56, 797,055.95 and 211,458.79

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Solution

The fourth proportional to 531,287.56, 797,055.95 and 211,458.79 is: 317,237.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,287.56 : 797,055.95 = 211,458.79 : x
  2. Step 2: Convert to fraction form
    531,287.56/797,055.95 = 211,458.79/x
  3. Step 3: Cross multiply
    531,287.56x = 797,055.95 × 211,458.79
  4. Step 4: Simplify right side
    531,287.56x = 168,544,486,749.30
  5. Step 5: Solve for x
    x = 168,544,486,749.30/531,287.56
  6. Step 6: Final answer
    x = 317,237.78

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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.