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Finding the Fourth Proportional to 307,184.64, 423,919.50 and 171,214.80

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Solution

The fourth proportional to 307,184.64, 423,919.50 and 171,214.80 is: 236,279.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,184.64 : 423,919.50 = 171,214.80 : x
  2. Step 2: Convert to fraction form
    307,184.64/423,919.50 = 171,214.80/x
  3. Step 3: Cross multiply
    307,184.64x = 423,919.50 × 171,214.80
  4. Step 4: Simplify right side
    307,184.64x = 72,581,292,408.60
  5. Step 5: Solve for x
    x = 72,581,292,408.60/307,184.64
  6. Step 6: Final answer
    x = 236,279.04

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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.