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Finding the Fourth Proportional to 309,799.67, 464,662.59 and 85,182.93

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Solution

The fourth proportional to 309,799.67, 464,662.59 and 85,182.93 is: 127,764.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,799.67 : 464,662.59 = 85,182.93 : x
  2. Step 2: Convert to fraction form
    309,799.67/464,662.59 = 85,182.93/x
  3. Step 3: Cross multiply
    309,799.67x = 464,662.59 × 85,182.93
  4. Step 4: Simplify right side
    309,799.67x = 39,581,320,877.59
  5. Step 5: Solve for x
    x = 39,581,320,877.59/309,799.67
  6. Step 6: Final answer
    x = 127,764.25

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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.