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Finding the Fourth Proportional to 488,717.50, 732,846.20 and 189,338.26

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Solution

The fourth proportional to 488,717.50, 732,846.20 and 189,338.26 is: 283,918.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,717.50 : 732,846.20 = 189,338.26 : x
  2. Step 2: Convert to fraction form
    488,717.50/732,846.20 = 189,338.26/x
  3. Step 3: Cross multiply
    488,717.50x = 732,846.20 × 189,338.26
  4. Step 4: Simplify right side
    488,717.50x = 138,755,824,355.61
  5. Step 5: Solve for x
    x = 138,755,824,355.61/488,717.50
  6. Step 6: Final answer
    x = 283,918.26

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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.