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Finding the Fourth Proportional to 309,699.57, 464,460.11 and 85,067.34

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Solution

The fourth proportional to 309,699.57, 464,460.11 and 85,067.34 is: 127,576.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,699.57 : 464,460.11 = 85,067.34 : x
  2. Step 2: Convert to fraction form
    309,699.57/464,460.11 = 85,067.34/x
  3. Step 3: Cross multiply
    309,699.57x = 464,460.11 × 85,067.34
  4. Step 4: Simplify right side
    309,699.57x = 39,510,386,093.81
  5. Step 5: Solve for x
    x = 39,510,386,093.81/309,699.57
  6. Step 6: Final answer
    x = 127,576.50

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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.