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Finding the Fourth Proportional to 307,171.80, 423,867.42 and 184,699.80

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Solution

The fourth proportional to 307,171.80, 423,867.42 and 184,699.80 is: 254,867.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,171.80 : 423,867.42 = 184,699.80 : x
  2. Step 2: Convert to fraction form
    307,171.80/423,867.42 = 184,699.80/x
  3. Step 3: Cross multiply
    307,171.80x = 423,867.42 × 184,699.80
  4. Step 4: Simplify right side
    307,171.80x = 78,288,227,700.52
  5. Step 5: Solve for x
    x = 78,288,227,700.52/307,171.80
  6. Step 6: Final answer
    x = 254,867.89

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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.