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Finding the Fourth Proportional to 306,057.60, 459,086.40 and 211,579.20

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Solution

The fourth proportional to 306,057.60, 459,086.40 and 211,579.20 is: 317,368.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,057.60 : 459,086.40 = 211,579.20 : x
  2. Step 2: Convert to fraction form
    306,057.60/459,086.40 = 211,579.20/x
  3. Step 3: Cross multiply
    306,057.60x = 459,086.40 × 211,579.20
  4. Step 4: Simplify right side
    306,057.60x = 97,133,133,242.88
  5. Step 5: Solve for x
    x = 97,133,133,242.88/306,057.60
  6. Step 6: Final answer
    x = 317,368.80

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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.