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Finding the Fourth Proportional to 379,884.44, 569,543.70 and 127,015.22

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Solution

The fourth proportional to 379,884.44, 569,543.70 and 127,015.22 is: 190,428.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,884.44 : 569,543.70 = 127,015.22 : x
  2. Step 2: Convert to fraction form
    379,884.44/569,543.70 = 127,015.22/x
  3. Step 3: Cross multiply
    379,884.44x = 569,543.70 × 127,015.22
  4. Step 4: Simplify right side
    379,884.44x = 72,340,718,355.11
  5. Step 5: Solve for x
    x = 72,340,718,355.11/379,884.44
  6. Step 6: Final answer
    x = 190,428.22

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1.5x scale

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.