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Finding the Fourth Proportional to 228,530.64, 315,342.72 and 127,928.64

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Solution

The fourth proportional to 228,530.64, 315,342.72 and 127,928.64 is: 176,524.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,530.64 : 315,342.72 = 127,928.64 : x
  2. Step 2: Convert to fraction form
    228,530.64/315,342.72 = 127,928.64/x
  3. Step 3: Cross multiply
    228,530.64x = 315,342.72 × 127,928.64
  4. Step 4: Simplify right side
    228,530.64x = 40,341,365,303.50
  5. Step 5: Solve for x
    x = 40,341,365,303.50/228,530.64
  6. Step 6: Final answer
    x = 176,524.97

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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.