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Finding the Fourth Proportional to 257,041.20, 385,446.60 and 116,727.60

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Solution

The fourth proportional to 257,041.20, 385,446.60 and 116,727.60 is: 175,039.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,041.20 : 385,446.60 = 116,727.60 : x
  2. Step 2: Convert to fraction form
    257,041.20/385,446.60 = 116,727.60/x
  3. Step 3: Cross multiply
    257,041.20x = 385,446.60 × 116,727.60
  4. Step 4: Simplify right side
    257,041.20x = 44,992,256,546.16
  5. Step 5: Solve for x
    x = 44,992,256,546.16/257,041.20
  6. Step 6: Final answer
    x = 175,039.09

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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.