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Finding the Fourth Proportional to 306,090.60, 459,135.90 and 186,340.20

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Solution

The fourth proportional to 306,090.60, 459,135.90 and 186,340.20 is: 279,510.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,090.60 : 459,135.90 = 186,340.20 : x
  2. Step 2: Convert to fraction form
    306,090.60/459,135.90 = 186,340.20/x
  3. Step 3: Cross multiply
    306,090.60x = 459,135.90 × 186,340.20
  4. Step 4: Simplify right side
    306,090.60x = 85,555,475,433.18
  5. Step 5: Solve for x
    x = 85,555,475,433.18/306,090.60
  6. Step 6: Final answer
    x = 279,510.30

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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.