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Finding the Fourth Proportional to 341,631.20, 512,446.80 and 120,015.20

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Solution

The fourth proportional to 341,631.20, 512,446.80 and 120,015.20 is: 180,022.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,631.20 : 512,446.80 = 120,015.20 : x
  2. Step 2: Convert to fraction form
    341,631.20/512,446.80 = 120,015.20/x
  3. Step 3: Cross multiply
    341,631.20x = 512,446.80 × 120,015.20
  4. Step 4: Simplify right side
    341,631.20x = 61,501,405,191.36
  5. Step 5: Solve for x
    x = 61,501,405,191.36/341,631.20
  6. Step 6: Final answer
    x = 180,022.80

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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.