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Finding the Fourth Proportional to 385,276.60, 577,916.70 and 135,958.60

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Solution

The fourth proportional to 385,276.60, 577,916.70 and 135,958.60 is: 203,938.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,276.60 : 577,916.70 = 135,958.60 : x
  2. Step 2: Convert to fraction form
    385,276.60/577,916.70 = 135,958.60/x
  3. Step 3: Cross multiply
    385,276.60x = 577,916.70 × 135,958.60
  4. Step 4: Simplify right side
    385,276.60x = 78,572,745,448.62
  5. Step 5: Solve for x
    x = 78,572,745,448.62/385,276.60
  6. Step 6: Final answer
    x = 203,938.54

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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.