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Finding the Fourth Proportional to 352,067.40, 528,101.10 and 212,099.40

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Solution

The fourth proportional to 352,067.40, 528,101.10 and 212,099.40 is: 318,149.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,067.40 : 528,101.10 = 212,099.40 : x
  2. Step 2: Convert to fraction form
    352,067.40/528,101.10 = 212,099.40/x
  3. Step 3: Cross multiply
    352,067.40x = 528,101.10 × 212,099.40
  4. Step 4: Simplify right side
    352,067.40x = 112,009,926,449.34
  5. Step 5: Solve for x
    x = 112,009,926,449.34/352,067.40
  6. Step 6: Final answer
    x = 318,149.10

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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.