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Finding the Fourth Proportional to 385,987.91, 578,784.42 and 161,287.02

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Solution

The fourth proportional to 385,987.91, 578,784.42 and 161,287.02 is: 241,848.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,987.91 : 578,784.42 = 161,287.02 : x
  2. Step 2: Convert to fraction form
    385,987.91/578,784.42 = 161,287.02/x
  3. Step 3: Cross multiply
    385,987.91x = 578,784.42 × 161,287.02
  4. Step 4: Simplify right side
    385,987.91x = 93,350,414,324.23
  5. Step 5: Solve for x
    x = 93,350,414,324.23/385,987.91
  6. Step 6: Final answer
    x = 241,848.03

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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.