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Finding the Fourth Proportional to 307,169.62, 423,878.87 and 171,214.76

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Solution

The fourth proportional to 307,169.62, 423,878.87 and 171,214.76 is: 236,267.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,169.62 : 423,878.87 = 171,214.76 : x
  2. Step 2: Convert to fraction form
    307,169.62/423,878.87 = 171,214.76/x
  3. Step 3: Cross multiply
    307,169.62x = 423,878.87 × 171,214.76
  4. Step 4: Simplify right side
    307,169.62x = 72,574,320,483.86
  5. Step 5: Solve for x
    x = 72,574,320,483.86/307,169.62
  6. Step 6: Final answer
    x = 236,267.90

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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.