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Finding the Fourth Proportional to 379,429.60, 569,176.80 and 130,111.60

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Solution

The fourth proportional to 379,429.60, 569,176.80 and 130,111.60 is: 195,178.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,429.60 : 569,176.80 = 130,111.60 : x
  2. Step 2: Convert to fraction form
    379,429.60/569,176.80 = 130,111.60/x
  3. Step 3: Cross multiply
    379,429.60x = 569,176.80 × 130,111.60
  4. Step 4: Simplify right side
    379,429.60x = 74,056,504,130.88
  5. Step 5: Solve for x
    x = 74,056,504,130.88/379,429.60
  6. Step 6: Final answer
    x = 195,178.51

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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.