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Finding the Fourth Proportional to 530,023.50, 731,439.72 and 303,669

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Solution

The fourth proportional to 530,023.50, 731,439.72 and 303,669 is: 419,067.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,023.50 : 731,439.72 = 303,669 : x
  2. Step 2: Convert to fraction form
    530,023.50/731,439.72 = 303,669/x
  3. Step 3: Cross multiply
    530,023.50x = 731,439.72 × 303,669
  4. Step 4: Simplify right side
    530,023.50x = 222,115,568,332.68
  5. Step 5: Solve for x
    x = 222,115,568,332.68/530,023.50
  6. Step 6: Final answer
    x = 419,067.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.