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Finding the Fourth Proportional to 352,125, 528,054.80 and 127,429.86

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Solution

The fourth proportional to 352,125, 528,054.80 and 127,429.86 is: 191,096.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,125 : 528,054.80 = 127,429.86 : x
  2. Step 2: Convert to fraction form
    352,125/528,054.80 = 127,429.86/x
  3. Step 3: Cross multiply
    352,125x = 528,054.80 × 127,429.86
  4. Step 4: Simplify right side
    352,125x = 67,289,949,236.33
  5. Step 5: Solve for x
    x = 67,289,949,236.33/352,125
  6. Step 6: Final answer
    x = 191,096.77

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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.