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Finding the Fourth Proportional to 302,658.36, 417,679.25 and 187,999.80

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Solution

The fourth proportional to 302,658.36, 417,679.25 and 187,999.80 is: 259,446.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,658.36 : 417,679.25 = 187,999.80 : x
  2. Step 2: Convert to fraction form
    302,658.36/417,679.25 = 187,999.80/x
  3. Step 3: Cross multiply
    302,658.36x = 417,679.25 × 187,999.80
  4. Step 4: Simplify right side
    302,658.36x = 78,523,612,435.75
  5. Step 5: Solve for x
    x = 78,523,612,435.75/302,658.36
  6. Step 6: Final answer
    x = 259,446.37

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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.