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Finding the Fourth Proportional to 379,873.66, 569,840.46 and 127,155.64

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Solution

The fourth proportional to 379,873.66, 569,840.46 and 127,155.64 is: 190,743.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,873.66 : 569,840.46 = 127,155.64 : x
  2. Step 2: Convert to fraction form
    379,873.66/569,840.46 = 127,155.64/x
  3. Step 3: Cross multiply
    379,873.66x = 569,840.46 × 127,155.64
  4. Step 4: Simplify right side
    379,873.66x = 72,458,428,389.19
  5. Step 5: Solve for x
    x = 72,458,428,389.19/379,873.66
  6. Step 6: Final answer
    x = 190,743.49

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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.