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Finding the Fourth Proportional to 481,253.34, 721,630.83 and 256,553.40

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Solution

The fourth proportional to 481,253.34, 721,630.83 and 256,553.40 is: 384,697.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,253.34 : 721,630.83 = 256,553.40 : x
  2. Step 2: Convert to fraction form
    481,253.34/721,630.83 = 256,553.40/x
  3. Step 3: Cross multiply
    481,253.34x = 721,630.83 × 256,553.40
  4. Step 4: Simplify right side
    481,253.34x = 185,136,842,981.32
  5. Step 5: Solve for x
    x = 185,136,842,981.32/481,253.34
  6. Step 6: Final answer
    x = 384,697.26

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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.