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Finding the Fourth Proportional to 379,866.24, 569,588.96 and 155,384.30

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Solution

The fourth proportional to 379,866.24, 569,588.96 and 155,384.30 is: 232,990.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,866.24 : 569,588.96 = 155,384.30 : x
  2. Step 2: Convert to fraction form
    379,866.24/569,588.96 = 155,384.30/x
  3. Step 3: Cross multiply
    379,866.24x = 569,588.96 × 155,384.30
  4. Step 4: Simplify right side
    379,866.24x = 88,505,181,837.33
  5. Step 5: Solve for x
    x = 88,505,181,837.33/379,866.24
  6. Step 6: Final answer
    x = 232,990.39

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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.