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Finding the Fourth Proportional to 354,136.91, 488,694.71 and 192,988.49

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Solution

The fourth proportional to 354,136.91, 488,694.71 and 192,988.49 is: 266,316.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,136.91 : 488,694.71 = 192,988.49 : x
  2. Step 2: Convert to fraction form
    354,136.91/488,694.71 = 192,988.49/x
  3. Step 3: Cross multiply
    354,136.91x = 488,694.71 × 192,988.49
  4. Step 4: Simplify right side
    354,136.91x = 94,312,454,153.89
  5. Step 5: Solve for x
    x = 94,312,454,153.89/354,136.91
  6. Step 6: Final answer
    x = 266,316.36

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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.