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Finding the Fourth Proportional to 352,060.20, 528,090.30 and 321,647.40

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Solution

The fourth proportional to 352,060.20, 528,090.30 and 321,647.40 is: 482,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,060.20 : 528,090.30 = 321,647.40 : x
  2. Step 2: Convert to fraction form
    352,060.20/528,090.30 = 321,647.40/x
  3. Step 3: Cross multiply
    352,060.20x = 528,090.30 × 321,647.40
  4. Step 4: Simplify right side
    352,060.20x = 169,858,871,960.22
  5. Step 5: Solve for x
    x = 169,858,871,960.22/352,060.20
  6. Step 6: Final answer
    x = 482,471.10

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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.