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Finding the Fourth Proportional to 385,271.60, 577,907.40 and 135,953.60

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Solution

The fourth proportional to 385,271.60, 577,907.40 and 135,953.60 is: 203,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,271.60 : 577,907.40 = 135,953.60 : x
  2. Step 2: Convert to fraction form
    385,271.60/577,907.40 = 135,953.60/x
  3. Step 3: Cross multiply
    385,271.60x = 577,907.40 × 135,953.60
  4. Step 4: Simplify right side
    385,271.60x = 78,568,591,496.64
  5. Step 5: Solve for x
    x = 78,568,591,496.64/385,271.60
  6. Step 6: Final answer
    x = 203,930.40

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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.