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Finding the Fourth Proportional to 352,618.80, 528,928.20 and 212,305.20

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Solution

The fourth proportional to 352,618.80, 528,928.20 and 212,305.20 is: 318,457.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,618.80 : 528,928.20 = 212,305.20 : x
  2. Step 2: Convert to fraction form
    352,618.80/528,928.20 = 212,305.20/x
  3. Step 3: Cross multiply
    352,618.80x = 528,928.20 × 212,305.20
  4. Step 4: Simplify right side
    352,618.80x = 112,294,207,286.64
  5. Step 5: Solve for x
    x = 112,294,207,286.64/352,618.80
  6. Step 6: Final answer
    x = 318,457.80

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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.