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Finding the Fourth Proportional to 493,372.64, 740,354.20 and 212,889.88

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Solution

The fourth proportional to 493,372.64, 740,354.20 and 212,889.88 is: 319,462.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,372.64 : 740,354.20 = 212,889.88 : x
  2. Step 2: Convert to fraction form
    493,372.64/740,354.20 = 212,889.88/x
  3. Step 3: Cross multiply
    493,372.64x = 740,354.20 × 212,889.88
  4. Step 4: Simplify right side
    493,372.64x = 157,613,916,795.50
  5. Step 5: Solve for x
    x = 157,613,916,795.50/493,372.64
  6. Step 6: Final answer
    x = 319,462.22

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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.