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Finding the Fourth Proportional to 279,092.61, 385,136.18 and 158,242.07

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Solution

The fourth proportional to 279,092.61, 385,136.18 and 158,242.07 is: 218,367.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,092.61 : 385,136.18 = 158,242.07 : x
  2. Step 2: Convert to fraction form
    279,092.61/385,136.18 = 158,242.07/x
  3. Step 3: Cross multiply
    279,092.61x = 385,136.18 × 158,242.07
  4. Step 4: Simplify right side
    279,092.61x = 60,944,746,355.09
  5. Step 5: Solve for x
    x = 60,944,746,355.09/279,092.61
  6. Step 6: Final answer
    x = 218,367.47

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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.