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Finding the Fourth Proportional to 352,574, 528,861 and 89,918

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Solution

The fourth proportional to 352,574, 528,861 and 89,918 is: 134,877

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,574 : 528,861 = 89,918 : x
  2. Step 2: Convert to fraction form
    352,574/528,861 = 89,918/x
  3. Step 3: Cross multiply
    352,574x = 528,861 × 89,918
  4. Step 4: Simplify right side
    352,574x = 47,554,123,398
  5. Step 5: Solve for x
    x = 47,554,123,398/352,574
  6. Step 6: Final answer
    x = 134,877

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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.