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Finding the Fourth Proportional to 379,871.66, 569,837.46 and 127,153.64

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Solution

The fourth proportional to 379,871.66, 569,837.46 and 127,153.64 is: 190,740.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,871.66 : 569,837.46 = 127,153.64 : x
  2. Step 2: Convert to fraction form
    379,871.66/569,837.46 = 127,153.64/x
  3. Step 3: Cross multiply
    379,871.66x = 569,837.46 × 127,153.64
  4. Step 4: Simplify right side
    379,871.66x = 72,456,907,247.35
  5. Step 5: Solve for x
    x = 72,456,907,247.35/379,871.66
  6. Step 6: Final answer
    x = 190,740.49

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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.