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Finding the Fourth Proportional to 379,325.16, 569,072.48 and 142,669.89

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Solution

The fourth proportional to 379,325.16, 569,072.48 and 142,669.89 is: 214,036.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,325.16 : 569,072.48 = 142,669.89 : x
  2. Step 2: Convert to fraction form
    379,325.16/569,072.48 = 142,669.89/x
  3. Step 3: Cross multiply
    379,325.16x = 569,072.48 × 142,669.89
  4. Step 4: Simplify right side
    379,325.16x = 81,189,507,410.28
  5. Step 5: Solve for x
    x = 81,189,507,410.28/379,325.16
  6. Step 6: Final answer
    x = 214,036.71

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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.