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Finding the Fourth Proportional to 385,254.60, 577,883.70 and 135,936.60

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Solution

The fourth proportional to 385,254.60, 577,883.70 and 135,936.60 is: 203,905.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,254.60 : 577,883.70 = 135,936.60 : x
  2. Step 2: Convert to fraction form
    385,254.60/577,883.70 = 135,936.60/x
  3. Step 3: Cross multiply
    385,254.60x = 577,883.70 × 135,936.60
  4. Step 4: Simplify right side
    385,254.60x = 78,555,545,373.42
  5. Step 5: Solve for x
    x = 78,555,545,373.42/385,254.60
  6. Step 6: Final answer
    x = 203,905.54

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1.5x scale

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.