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Finding the Fourth Proportional to 380,272.60, 570,438.60 and 169,931.80

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Solution

The fourth proportional to 380,272.60, 570,438.60 and 169,931.80 is: 254,910.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,272.60 : 570,438.60 = 169,931.80 : x
  2. Step 2: Convert to fraction form
    380,272.60/570,438.60 = 169,931.80/x
  3. Step 3: Cross multiply
    380,272.60x = 570,438.60 × 169,931.80
  4. Step 4: Simplify right side
    380,272.60x = 96,935,658,087.48
  5. Step 5: Solve for x
    x = 96,935,658,087.48/380,272.60
  6. Step 6: Final answer
    x = 254,910.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.