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Finding the Fourth Proportional to 392,849.69, 542,136.15 and 237,804.55

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Solution

The fourth proportional to 392,849.69, 542,136.15 and 237,804.55 is: 328,172.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,849.69 : 542,136.15 = 237,804.55 : x
  2. Step 2: Convert to fraction form
    392,849.69/542,136.15 = 237,804.55/x
  3. Step 3: Cross multiply
    392,849.69x = 542,136.15 × 237,804.55
  4. Step 4: Simplify right side
    392,849.69x = 128,922,444,108.01
  5. Step 5: Solve for x
    x = 128,922,444,108.01/392,849.69
  6. Step 6: Final answer
    x = 328,172.44

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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.