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Finding the Fourth Proportional to 253,705.57, 380,580.84 and 66,717.07

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Solution

The fourth proportional to 253,705.57, 380,580.84 and 66,717.07 is: 100,081.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,705.57 : 380,580.84 = 66,717.07 : x
  2. Step 2: Convert to fraction form
    253,705.57/380,580.84 = 66,717.07/x
  3. Step 3: Cross multiply
    253,705.57x = 380,580.84 × 66,717.07
  4. Step 4: Simplify right side
    253,705.57x = 25,391,237,591.49
  5. Step 5: Solve for x
    x = 25,391,237,591.49/253,705.57
  6. Step 6: Final answer
    x = 100,081.52

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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.