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Finding the Fourth Proportional to 306,086.40, 459,129.60 and 148,622.40

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Solution

The fourth proportional to 306,086.40, 459,129.60 and 148,622.40 is: 222,933.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,086.40 : 459,129.60 = 148,622.40 : x
  2. Step 2: Convert to fraction form
    306,086.40/459,129.60 = 148,622.40/x
  3. Step 3: Cross multiply
    306,086.40x = 459,129.60 × 148,622.40
  4. Step 4: Simplify right side
    306,086.40x = 68,236,943,063.04
  5. Step 5: Solve for x
    x = 68,236,943,063.04/306,086.40
  6. Step 6: Final answer
    x = 222,933.60

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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.