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Finding the Fourth Proportional to 458,858.10, 687,951.63 and 308,725.14

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Solution

The fourth proportional to 458,858.10, 687,951.63 and 308,725.14 is: 462,861.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,858.10 : 687,951.63 = 308,725.14 : x
  2. Step 2: Convert to fraction form
    458,858.10/687,951.63 = 308,725.14/x
  3. Step 3: Cross multiply
    458,858.10x = 687,951.63 × 308,725.14
  4. Step 4: Simplify right side
    458,858.10x = 212,387,963,284.98
  5. Step 5: Solve for x
    x = 212,387,963,284.98/458,858.10
  6. Step 6: Final answer
    x = 462,861.97

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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.