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Finding the Fourth Proportional to 352,561.10, 528,064.05 and 212,074.70

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Solution

The fourth proportional to 352,561.10, 528,064.05 and 212,074.70 is: 317,644.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,561.10 : 528,064.05 = 212,074.70 : x
  2. Step 2: Convert to fraction form
    352,561.10/528,064.05 = 212,074.70/x
  3. Step 3: Cross multiply
    352,561.10x = 528,064.05 × 212,074.70
  4. Step 4: Simplify right side
    352,561.10x = 111,989,024,984.54
  5. Step 5: Solve for x
    x = 111,989,024,984.54/352,561.10
  6. Step 6: Final answer
    x = 317,644.30

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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.