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Finding the Fourth Proportional to 386,872.83, 580,122.49 and 162,172.93

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Solution

The fourth proportional to 386,872.83, 580,122.49 and 162,172.93 is: 243,181.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,872.83 : 580,122.49 = 162,172.93 : x
  2. Step 2: Convert to fraction form
    386,872.83/580,122.49 = 162,172.93/x
  3. Step 3: Cross multiply
    386,872.83x = 580,122.49 × 162,172.93
  4. Step 4: Simplify right side
    386,872.83x = 94,080,163,962.20
  5. Step 5: Solve for x
    x = 94,080,163,962.20/386,872.83
  6. Step 6: Final answer
    x = 243,181.11

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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.