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Finding the Fourth Proportional to 386,056.88, 578,943 and 133,273.04

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Solution

The fourth proportional to 386,056.88, 578,943 and 133,273.04 is: 199,860.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,056.88 : 578,943 = 133,273.04 : x
  2. Step 2: Convert to fraction form
    386,056.88/578,943 = 133,273.04/x
  3. Step 3: Cross multiply
    386,056.88x = 578,943 × 133,273.04
  4. Step 4: Simplify right side
    386,056.88x = 77,157,493,596.72
  5. Step 5: Solve for x
    x = 77,157,493,596.72/386,056.88
  6. Step 6: Final answer
    x = 199,860.43

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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.