Home / 309,936.20-464,904.30-85,296.20

Finding the Fourth Proportional to 309,936.20, 464,904.30 and 85,296.20

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Solution

The fourth proportional to 309,936.20, 464,904.30 and 85,296.20 is: 127,944.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,936.20 : 464,904.30 = 85,296.20 : x
  2. Step 2: Convert to fraction form
    309,936.20/464,904.30 = 85,296.20/x
  3. Step 3: Cross multiply
    309,936.20x = 464,904.30 × 85,296.20
  4. Step 4: Simplify right side
    309,936.20x = 39,654,570,153.66
  5. Step 5: Solve for x
    x = 39,654,570,153.66/309,936.20
  6. Step 6: Final answer
    x = 127,944.30

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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.