Home / 309,933.20-464,899.80-85,293.20

Finding the Fourth Proportional to 309,933.20, 464,899.80 and 85,293.20

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Solution

The fourth proportional to 309,933.20, 464,899.80 and 85,293.20 is: 127,939.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,933.20 : 464,899.80 = 85,293.20 : x
  2. Step 2: Convert to fraction form
    309,933.20/464,899.80 = 85,293.20/x
  3. Step 3: Cross multiply
    309,933.20x = 464,899.80 × 85,293.20
  4. Step 4: Simplify right side
    309,933.20x = 39,652,791,621.36
  5. Step 5: Solve for x
    x = 39,652,791,621.36/309,933.20
  6. Step 6: Final answer
    x = 127,939.80

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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.