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Finding the Fourth Proportional to 300,015.60, 450,023.40 and 78,399.60

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Solution

The fourth proportional to 300,015.60, 450,023.40 and 78,399.60 is: 117,599.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,015.60 : 450,023.40 = 78,399.60 : x
  2. Step 2: Convert to fraction form
    300,015.60/450,023.40 = 78,399.60/x
  3. Step 3: Cross multiply
    300,015.60x = 450,023.40 × 78,399.60
  4. Step 4: Simplify right side
    300,015.60x = 35,281,654,550.64
  5. Step 5: Solve for x
    x = 35,281,654,550.64/300,015.60
  6. Step 6: Final answer
    x = 117,599.40

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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.