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Finding the Fourth Proportional to 354,136.89, 488,694.63 and 192,988.47

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Solution

The fourth proportional to 354,136.89, 488,694.63 and 192,988.47 is: 266,316.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,136.89 : 488,694.63 = 192,988.47 : x
  2. Step 2: Convert to fraction form
    354,136.89/488,694.63 = 192,988.47/x
  3. Step 3: Cross multiply
    354,136.89x = 488,694.63 × 192,988.47
  4. Step 4: Simplify right side
    354,136.89x = 94,312,431,497.23
  5. Step 5: Solve for x
    x = 94,312,431,497.23/354,136.89
  6. Step 6: Final answer
    x = 266,316.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.