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Finding the Fourth Proportional to 273,131.60, 409,697.40 and 76,139.60

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Solution

The fourth proportional to 273,131.60, 409,697.40 and 76,139.60 is: 114,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,131.60 : 409,697.40 = 76,139.60 : x
  2. Step 2: Convert to fraction form
    273,131.60/409,697.40 = 76,139.60/x
  3. Step 3: Cross multiply
    273,131.60x = 409,697.40 × 76,139.60
  4. Step 4: Simplify right side
    273,131.60x = 31,194,196,157.04
  5. Step 5: Solve for x
    x = 31,194,196,157.04/273,131.60
  6. Step 6: Final answer
    x = 114,209.40

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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.