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Finding the Fourth Proportional to 386,883.60, 579,864.60 and 162,243.60

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Solution

The fourth proportional to 386,883.60, 579,864.60 and 162,243.60 is: 243,172.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,883.60 : 579,864.60 = 162,243.60 : x
  2. Step 2: Convert to fraction form
    386,883.60/579,864.60 = 162,243.60/x
  3. Step 3: Cross multiply
    386,883.60x = 579,864.60 × 162,243.60
  4. Step 4: Simplify right side
    386,883.60x = 94,079,320,216.56
  5. Step 5: Solve for x
    x = 94,079,320,216.56/386,883.60
  6. Step 6: Final answer
    x = 243,172.16

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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.