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Finding the Fourth Proportional to 512,970.34, 769,468.56 and 243,035.20

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Solution

The fourth proportional to 512,970.34, 769,468.56 and 243,035.20 is: 364,558.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,970.34 : 769,468.56 = 243,035.20 : x
  2. Step 2: Convert to fraction form
    512,970.34/769,468.56 = 243,035.20/x
  3. Step 3: Cross multiply
    512,970.34x = 769,468.56 × 243,035.20
  4. Step 4: Simplify right side
    512,970.34x = 187,007,945,373.31
  5. Step 5: Solve for x
    x = 187,007,945,373.31/512,970.34
  6. Step 6: Final answer
    x = 364,558.98

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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.