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Finding the Fourth Proportional to 385,282.60, 577,925.70 and 135,964.60

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Solution

The fourth proportional to 385,282.60, 577,925.70 and 135,964.60 is: 203,947.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,282.60 : 577,925.70 = 135,964.60 : x
  2. Step 2: Convert to fraction form
    385,282.60/577,925.70 = 135,964.60/x
  3. Step 3: Cross multiply
    385,282.60x = 577,925.70 × 135,964.60
  4. Step 4: Simplify right side
    385,282.60x = 78,577,436,630.22
  5. Step 5: Solve for x
    x = 78,577,436,630.22/385,282.60
  6. Step 6: Final answer
    x = 203,947.54

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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.