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Finding the Fourth Proportional to 340,067.40, 510,101.10 and 287,579.40

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Solution

The fourth proportional to 340,067.40, 510,101.10 and 287,579.40 is: 431,369.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,067.40 : 510,101.10 = 287,579.40 : x
  2. Step 2: Convert to fraction form
    340,067.40/510,101.10 = 287,579.40/x
  3. Step 3: Cross multiply
    340,067.40x = 510,101.10 × 287,579.40
  4. Step 4: Simplify right side
    340,067.40x = 146,694,568,277.34
  5. Step 5: Solve for x
    x = 146,694,568,277.34/340,067.40
  6. Step 6: Final answer
    x = 431,369.10

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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.