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Finding the Fourth Proportional to 228,387.06, 315,174.72 and 126,419.58

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Solution

The fourth proportional to 228,387.06, 315,174.72 and 126,419.58 is: 174,459.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,387.06 : 315,174.72 = 126,419.58 : x
  2. Step 2: Convert to fraction form
    228,387.06/315,174.72 = 126,419.58/x
  3. Step 3: Cross multiply
    228,387.06x = 315,174.72 × 126,419.58
  4. Step 4: Simplify right side
    228,387.06x = 39,844,255,729.02
  5. Step 5: Solve for x
    x = 39,844,255,729.02/228,387.06
  6. Step 6: Final answer
    x = 174,459.34

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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.