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Finding the Fourth Proportional to 352,572, 528,858 and 89,916

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Solution

The fourth proportional to 352,572, 528,858 and 89,916 is: 134,874

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,572 : 528,858 = 89,916 : x
  2. Step 2: Convert to fraction form
    352,572/528,858 = 89,916/x
  3. Step 3: Cross multiply
    352,572x = 528,858 × 89,916
  4. Step 4: Simplify right side
    352,572x = 47,552,795,928
  5. Step 5: Solve for x
    x = 47,552,795,928/352,572
  6. Step 6: Final answer
    x = 134,874

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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.