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Finding the Fourth Proportional to 302,009.40, 416,773.20 and 166,045.68

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Solution

The fourth proportional to 302,009.40, 416,773.20 and 166,045.68 is: 229,143.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,009.40 : 416,773.20 = 166,045.68 : x
  2. Step 2: Convert to fraction form
    302,009.40/416,773.20 = 166,045.68/x
  3. Step 3: Cross multiply
    302,009.40x = 416,773.20 × 166,045.68
  4. Step 4: Simplify right side
    302,009.40x = 69,203,389,399.78
  5. Step 5: Solve for x
    x = 69,203,389,399.78/302,009.40
  6. Step 6: Final answer
    x = 229,143.16

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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.