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Finding the Fourth Proportional to 356,188.16, 490,548.48 and 275,317.76

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Solution

The fourth proportional to 356,188.16, 490,548.48 and 275,317.76 is: 379,172.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,188.16 : 490,548.48 = 275,317.76 : x
  2. Step 2: Convert to fraction form
    356,188.16/490,548.48 = 275,317.76/x
  3. Step 3: Cross multiply
    356,188.16x = 490,548.48 × 275,317.76
  4. Step 4: Simplify right side
    356,188.16x = 135,056,708,685.01
  5. Step 5: Solve for x
    x = 135,056,708,685.01/356,188.16
  6. Step 6: Final answer
    x = 379,172.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.