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Finding the Fourth Proportional to 273,321.60, 409,982.40 and 256,700.40

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Solution

The fourth proportional to 273,321.60, 409,982.40 and 256,700.40 is: 385,050.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,321.60 : 409,982.40 = 256,700.40 : x
  2. Step 2: Convert to fraction form
    273,321.60/409,982.40 = 256,700.40/x
  3. Step 3: Cross multiply
    273,321.60x = 409,982.40 × 256,700.40
  4. Step 4: Simplify right side
    273,321.60x = 105,242,646,072.96
  5. Step 5: Solve for x
    x = 105,242,646,072.96/273,321.60
  6. Step 6: Final answer
    x = 385,050.60

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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.