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Finding the Fourth Proportional to 309,387.70, 464,081.96 and 84,750.11

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Solution

The fourth proportional to 309,387.70, 464,081.96 and 84,750.11 is: 127,125.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,387.70 : 464,081.96 = 84,750.11 : x
  2. Step 2: Convert to fraction form
    309,387.70/464,081.96 = 84,750.11/x
  3. Step 3: Cross multiply
    309,387.70x = 464,081.96 × 84,750.11
  4. Step 4: Simplify right side
    309,387.70x = 39,330,998,924.53
  5. Step 5: Solve for x
    x = 39,330,998,924.53/309,387.70
  6. Step 6: Final answer
    x = 127,125.28

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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.