Home / 309,895.59-464,782.19-85,198.08

Finding the Fourth Proportional to 309,895.59, 464,782.19 and 85,198.08

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Solution

The fourth proportional to 309,895.59, 464,782.19 and 85,198.08 is: 127,780.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,895.59 : 464,782.19 = 85,198.08 : x
  2. Step 2: Convert to fraction form
    309,895.59/464,782.19 = 85,198.08/x
  3. Step 3: Cross multiply
    309,895.59x = 464,782.19 × 85,198.08
  4. Step 4: Simplify right side
    309,895.59x = 39,598,549,780.20
  5. Step 5: Solve for x
    x = 39,598,549,780.20/309,895.59
  6. Step 6: Final answer
    x = 127,780.29

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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.