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Finding the Fourth Proportional to 352,872, 529,308 and 90,216

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Solution

The fourth proportional to 352,872, 529,308 and 90,216 is: 135,324

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,872 : 529,308 = 90,216 : x
  2. Step 2: Convert to fraction form
    352,872/529,308 = 90,216/x
  3. Step 3: Cross multiply
    352,872x = 529,308 × 90,216
  4. Step 4: Simplify right side
    352,872x = 47,752,050,528
  5. Step 5: Solve for x
    x = 47,752,050,528/352,872
  6. Step 6: Final answer
    x = 135,324

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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.